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Roknić J, Despotović I, Katić J, Petrović Ž. Electrospun PVP Fibers as Carriers of Ca 2+ Ions to Improve the Osteoinductivity of Titanium-Based Dental Implants. Molecules 2024; 29:4181. [PMID: 39275029 PMCID: PMC11397674 DOI: 10.3390/molecules29174181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Revised: 08/30/2024] [Accepted: 09/02/2024] [Indexed: 09/16/2024] Open
Abstract
Although titanium and its alloys are widely used as dental implants, they cannot induce the formation of new bone around the implant, which is a basis for the functional integrity and long-term stability of implants. This study focused on the functionalization of the titanium/titanium oxide surface as the gold standard for dental implants, with electrospun composite fibers consisting of polyvinylpyrrolidone and Ca2+ ions. Polymer fibers as carriers of Ca2+ ions should gradually dissolve, releasing Ca2+ ions into the environment of the implant when it is immersed in a model electrolyte of artificial saliva. Scanning electron microscopy, energy dispersive X-ray spectroscopy and attenuated total reflectance Fourier transform infrared spectroscopy confirmed the successful formation of a porous network of composite fibers on the titanium/titanium oxide surface. The mechanism of the formation of the composite fibers was investigated in detail by quantum chemical calculations at the density functional theory level based on the simulation of possible molecular interactions between Ca2+ ions, polymer fibers and titanium substrate. During the 7-day immersion of the functionalized titanium in artificial saliva, the processes on the titanium/titanium oxide/composite fibers/artificial saliva interface were monitored by electrochemical impedance spectroscopy. It can be concluded from all the results that the composite fibers formed on titanium have application potential for the development of osteoinductive and thus more biocompatible dental implants.
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Affiliation(s)
- Janina Roknić
- Department of Electrochemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia
| | - Ines Despotović
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička Cesta 54, 10002 Zagreb, Croatia
| | - Jozefina Katić
- Department of Electrochemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia
| | - Željka Petrović
- Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička Cesta 54, 10002 Zagreb, Croatia
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2
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Liu C, Yan Z, Yang J, Wei P, Zhang D, Wang Q, Zhang X, Hao Y, Yang D. Corrosion and Biological Behaviors of Biomedical Ti-24Nb-4Zr-8Sn Alloy under an Oxidative Stress Microenvironment. ACS APPLIED MATERIALS & INTERFACES 2024; 16:18503-18521. [PMID: 38570902 DOI: 10.1021/acsami.4c00562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Biomaterials can induce an inflammatory response in surrounding tissues after implantation, generating and releasing reactive oxygen species (ROS), such as hydrogen peroxide (H2O2). The excessive accumulation of ROS may create a microenvironment with high levels of oxidative stress (OS), which subsequently accelerates the degradation of the passive film on the surface of titanium (Ti) alloys and affects their biological activity. The immunomodulatory role of macrophages in biomaterial osteogenesis under OS is unknown. This study aimed to explore the corrosion behavior and bone formation of Ti implants under an OS microenvironment. In this study, the corrosion resistance and osteoinduction capabilities in normal and OS conditions of the Ti-24Nb-4Zr-8Sn (wt %, Ti2448) were assessed. Electrochemical impedance spectroscopy analysis indicated that the Ti2448 alloy exhibited superior corrosion resistance on exposure to excessive ROS compared to the Ti-6Al-4V (TC4) alloy. This can be attributed to the formation of the TiO2 and Nb2O5 passive films, which mitigated the adverse effects of OS. In vitro MC3T3-E1 cell experiments revealed that the Ti2448 alloy exhibited good biocompatibility in the OS microenvironment, whereas the osteogenic differentiation level was comparable to that of the TC4 alloy. The Ti2448 alloy significantly alleviates intercellular ROS levels, inducing a higher proportion of M2 phenotypes (52.7%) under OS. Ti2448 alloy significantly promoted the expression of the anti-inflammatory cytokine, interleukin 10 (IL-10), and osteoblast-related cytokines, bone morphogenetic protein 2 (BMP-2), which relatively increased by 26.9 and 31.4%, respectively, compared to TC4 alloy. The Ti2448 alloy provides a favorable osteoimmune environment and significantly promotes the proliferation and differentiation of osteoblasts in vitro compared to the TC4 alloy. Ultimately, the Ti2448 alloy demonstrated excellent corrosion resistance and immunomodulatory properties in an OS microenvironment, providing valuable insights into potential clinical applications as implants to repair bone tissue defects.
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Affiliation(s)
- Chang Liu
- School of Stomatology, Jiamusi University, Jiamusi, Heilongjiang 154004, People's Republic of China
- Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning 110001, People's Republic of China
| | - Zenglong Yan
- Liaoning People's Hospital, 33 Wenyi Road, Shenyang, Liaoning 110013, People's Republic of China
| | - Jun Yang
- School of Stomatology, Jiamusi University, Jiamusi, Heilongjiang 154004, People's Republic of China
- Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning 110001, People's Republic of China
| | - Penggong Wei
- Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning 110001, People's Republic of China
| | - Dan Zhang
- Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning 110001, People's Republic of China
| | - Qiang Wang
- Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning 110001, People's Republic of China
| | - Xing Zhang
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, Liaoning 110016, People's Republic of China
| | - Yulin Hao
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, Liaoning 110016, People's Republic of China
| | - Donghong Yang
- School of Stomatology, Jiamusi University, Jiamusi, Heilongjiang 154004, People's Republic of China
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Kurtz MA, Alaniz K, Taylor LM, Moreno-Reyes A, Gilbert JL. Increasing temperature accelerates Ti-6Al-4V oxide degradation and selective dissolution: An Arrhenius-based analysis. Acta Biomater 2024; 178:352-365. [PMID: 38417644 DOI: 10.1016/j.actbio.2024.02.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 02/08/2024] [Accepted: 02/19/2024] [Indexed: 03/01/2024]
Abstract
Ti-6Al-4V selective dissolution occurs in vivo on orthopedic implants as the leading edge of a pitting corrosion attack. A gap persists in our fundamental understanding of selective dissolution and pre-clinical tests fail to reproduce this damage. While CoCrMo clinical use decreases, Ti-6Al-4V and the crevice geometries where corrosion can occur remain ubiquitous in implant design. Additionally, most additively manufactured devices cleared by the FDA use Ti-6Al-4V. Accelerated preclinical testing, therefore, would aid in the evaluation of new titanium devices and biomaterials. In this study, using temperature, we (1) developed an accelerated pre-clinical methodology to rapidly induce dissolution and (2) investigated the structure-property relationship between the dissolving surface and the oxide layer. We hypothesized that solution temperature and H2O2 concentration would accelerate oxide degradation, increase corrosion kinetics and decrease experimental times. To assess this effect, we selected temperatures above (45 °C), below (24 °C), and at (37 °C) physiological levels. Then, we acquired electrochemical impedance spectra during active β dissolution, showing significant decreases in oxide polarization resistance (Rp) both over time (p = 0.000) and as temperature increased (p = 0.000). Next, using the impedance response as a guide, we quantified the extent of selective dissolution in scanning electron micrographs. As the temperature increased, the corrosion rate increased in an Arrhenius-dependent manner. Last, we identified three surface classes as the oxide properties changed: undissolved, transition and dissolved. These results indicate a concentration and temperature dependent structure-property relationship between the solution, the protective oxide film, and the substrate alloy. Additionally, we show how supraphysiological temperatures induce structurally similar dissolution to tests run at 37 °C in less experimental time. STATEMENT OF SIGNIFICANCE: Within modular taper junctions of total hip replacement systems, retrieval studies document severe corrosion including Ti-6AL-4V selective dissolution. Current pre-clinical tests and ASTM standards fail to reproduce this damage, preventing accurate screening of titanium-based biomaterials and implant designs. In this study, we induce selective dissolution using accelerated temperatures. Building off previous work, we use electrochemical impedance spectroscopy to rapidly monitor the oxide film during dissolution. We elucidate components of the dissolution mechanism, where oxide degradation precedes pit nucleation within the β phase. Using an Arrhenius approach, we relate these accelerated testing conditions to more physiologically relevant solution concentrations. In total, this study shows the importance of including adverse electrochemical events like cathodic activation and inflammatory species in pre-clinical testing.
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Affiliation(s)
- Michael A Kurtz
- Department of Bioengineering, Clemson University, Clemson, SC, USA; The Clemson University-Medical University of South Carolina Bioengineering Program, Charleston, SC, USA
| | - Kazzandra Alaniz
- Department of Bioengineering, Clemson University, Clemson, SC, USA; The Clemson University-Medical University of South Carolina Bioengineering Program, Charleston, SC, USA
| | - Lilliana M Taylor
- Department of Bioengineering, Clemson University, Clemson, SC, USA; The Clemson University-Medical University of South Carolina Bioengineering Program, Charleston, SC, USA
| | - Aldo Moreno-Reyes
- Department of Bioengineering, Clemson University, Clemson, SC, USA; The Clemson University-Medical University of South Carolina Bioengineering Program, Charleston, SC, USA
| | - Jeremy L Gilbert
- Department of Bioengineering, Clemson University, Clemson, SC, USA; The Clemson University-Medical University of South Carolina Bioengineering Program, Charleston, SC, USA.
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Sotniczuk A, Kalita D, Chromiński W, Matczuk M, Pisarek M, Garbacz H. Albumin suppresses oxidation of TiNb alloy in the simulated inflammatory environment. J Biomed Mater Res B Appl Biomater 2024; 112:e35404. [PMID: 38533765 DOI: 10.1002/jbm.b.35404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 02/12/2024] [Accepted: 03/13/2024] [Indexed: 03/28/2024]
Abstract
Literature data has shown that reactive oxygen species (ROS), generated by immune cells during post-operative inflammation, could induce corrosion of standard Ti-based biomaterials. For Ti6Al4V alloy, this process can be further accelerated by the presence of albumin. However, this phenomenon remains unexplored for Ti β-phase materials, such as TiNb alloys. These alloys are attractive due to their relatively low elastic modulus value. This study aims to address the question of how albumin influences the corrosion resistance of TiNb alloy under simulated inflammation. Electrochemical and ion release tests have revealed that albumin significantly enhances corrosion resistance over both short (2 and 24 h) and long (2 weeks) exposure periods. Furthermore, post-immersion XPS and cross-section TEM analysis have demonstrated that prolonged exposure to an albumin-rich inflammatory solution results in the complete coverage of the TiNb surface by a protein layer. Moreover, TEM studies revealed that H2O2-induced oxidation and further formation of a defective oxide film were suppressed in the solution enriched with albumin. Overall results indicate that contrary to Ti6Al4V, the addition of albumin to the PBS + H2O2 solution is not necessary to simulate the harsh inflammatory conditions as could possibly be found in the vicinity of a TiNb implant.
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Affiliation(s)
- Agata Sotniczuk
- NOMATEN Centre of Excellence, National Centre for Nuclear Research, Otwock, Poland
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Damian Kalita
- NOMATEN Centre of Excellence, National Centre for Nuclear Research, Otwock, Poland
| | - Witold Chromiński
- NOMATEN Centre of Excellence, National Centre for Nuclear Research, Otwock, Poland
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Magdalena Matczuk
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Warsaw, Poland
| | - Marcin Pisarek
- Laboratory of Surface Analysis, Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland
| | - Halina Garbacz
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
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5
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Li B, Lang Y, Chen H, Feng H, Qu H, Sun X, Tian Z. Combined role of molybdenum and nitrogen in Limiting corrosion and pitting of super austenitic stainless steel. Heliyon 2024; 10:e25964. [PMID: 38375291 PMCID: PMC10875432 DOI: 10.1016/j.heliyon.2024.e25964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/21/2024] Open
Abstract
The molybdenum and nitrogen content of super austenitic stainless steel in Cl- solution is shown to influence pitting resistance using immersion, electrochemical testing, and simulation. Variations in Mo and N content affect the defect density, resistance, and densification of the passive film, thereby reducing the number of pitting. A higher local pH associated with the pitting pits and an increase in NH3(NH4+) are the results of increased N content, which also slows the rate of pitting expansion. The combined effects of fewer actively reactive spots within the passive film retarded pitting, and decreased corrosion rates due to NH3(NH4+) mitigation of local acidity which serves to reduce the corrosion rate. The work function is improved to a greater extent when Mo and N are co-doped compared with individual Mo and N doping, and the adsorption energy is significantly increased when Mo and N are co-doped, indicating a synergistic role for Mo and N in the prevention of corrosion by Cl-.
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Affiliation(s)
- Bingbing Li
- Central Iron and Steel Research Institute Company Limited, Beijing, 100081, China
| | - Yuping Lang
- Central Iron and Steel Research Institute Company Limited, Beijing, 100081, China
| | - Haitao Chen
- Central Iron and Steel Research Institute Company Limited, Beijing, 100081, China
| | - Hanqiu Feng
- Central Iron and Steel Research Institute Company Limited, Beijing, 100081, China
| | - Huapeng Qu
- Central Iron and Steel Research Institute Company Limited, Beijing, 100081, China
| | - Xu Sun
- Material Digital R&D Center, China Iron & Steel Research Institute Group, Beijing, 100081, China
| | - Zhiling Tian
- Central Iron and Steel Research Institute Company Limited, Beijing, 100081, China
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6
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Mace AO, Kurtz MA, Gilbert JL. Fretting and Fretting Corrosion Behavior of Additively Manufactured Ti-6Al-4V and Ti-Nb-Zr Alloys in Air and Physiological Solutions. J Funct Biomater 2024; 15:38. [PMID: 38391891 PMCID: PMC10889821 DOI: 10.3390/jfb15020038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/31/2024] [Accepted: 02/02/2024] [Indexed: 02/24/2024] Open
Abstract
Additive manufacturing (AM) of orthopedic implants has increased in recent years, providing benefits to surgeons, patients, and implant companies. Both traditional and new titanium alloys are under consideration for AM-manufactured implants. However, concerns remain about their wear and corrosion (tribocorrosion) performance. In this study, the effects of fretting corrosion were investigated on AM Ti-29Nb-21Zr (pre-alloyed and admixed) and AM Ti-6Al-4V with 1% nano yttria-stabilized zirconia (nYSZ). Low cycle (100 cycles, 3 Hz, 100 mN) fretting and fretting corrosion (potentiostatic, 0 V vs. Ag/AgCl) methods were used to compare these AM alloys to traditionally manufactured AM Ti-6Al-4V. Alloy and admixture surfaces were subjected to (1) fretting in the air (i.e., small-scale reciprocal sliding) and (2) fretting corrosion in phosphate-buffered saline (PBS) using a single diamond asperity (17 µm radius). Wear track depth measurements, fretting currents and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) analysis of oxide debris revealed that pre-alloyed AM Ti-29Nb-21Zr generally had greater wear depths after 100 cycles (4.67 +/- 0.55 µm dry and 5.78 +/- 0.83 µm in solution) and higher fretting currents (0.58 +/- 0.07 µA). A correlation (R2 = 0.67) was found between wear depth and the average fretting currents with different alloys located in different regions of the relationship. No statistically significant differences were observed in wear depth between in-air and in-PBS tests. However, significantly higher amounts of oxygen (measured by oxygen weight % by EDS analysis of the debris) were embedded within the wear track for tests performed in PBS compared to air for all samples except the ad-mixed Ti-29Nb-21Zr (p = 0.21). For traditional and AM Ti-6Al-4V, the wear track depths (dry fretting: 2.90 +/- 0.32 µm vs. 2.51 +/- 0.51 μm, respectively; fretting corrosion: 2.09 +/- 0.59 μm vs. 1.16 +/- 0.79 μm, respectively) and fretting current measurements (0.37 +/- 0.05 μA vs. 0.34 +/- 0.05 μA, respectively) showed no significant differences. The dominant wear deformation process was plastic deformation followed by cyclic extrusion of plate-like wear debris at the end of the stroke, resulting in ribbon-like extruded material for all alloys. While previous work documented improved corrosion resistance of Ti-29Nb-21Zr in simulated inflammatory solutions over Ti-6Al-4V, this work does not show similar improvements in the relative fretting corrosion resistance of these alloys compared to Ti-6Al-4V.
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Affiliation(s)
- Annsley O Mace
- Clemson-Medical University of South Carolina Bioengineering Program, Department of Bioengineering, Clemson University, Charleston, SC 29464, USA
| | - Michael A Kurtz
- Clemson-Medical University of South Carolina Bioengineering Program, Department of Bioengineering, Clemson University, Charleston, SC 29464, USA
| | - Jeremy L Gilbert
- Clemson-Medical University of South Carolina Bioengineering Program, Department of Bioengineering, Clemson University, Charleston, SC 29464, USA
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Negut I, Gradisteanu-Pircalabioru G, Dinu M, Bita B, Parau AC, Grumezescu V, Ristoscu C, Chifiriuc MC. Bioglass and Vitamin D3 Coatings for Titanium Implants: Osseointegration and Corrosion Protection. Biomedicines 2023; 11:2772. [PMID: 37893145 PMCID: PMC10604371 DOI: 10.3390/biomedicines11102772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
The use of MAPLE synthesized thin films based on BG and VD3 for improving the osseointegration and corrosion protection of Ti-like implant surfaces is reported. The distribution of chemical elements and functional groups was shown by FTIR spectrometry; the stoichiometry and chemical functional integrity of thin films after MAPLE deposition was preserved, optimal results being revealed especially for the BG+VD3_025 samples. The morphology and topography were examined by SEM and AFM, and revealed surfaces with many irregularities, favoring a good adhesion of cells. The thin films' cytotoxicity and biocompatibility were evaluated in vitro at the morphological, biochemical, and molecular level. Following incubation with HDF cells, BG57+VD3_ 025 thin films showed the best degree of biocompatibility, as illustrated by the viability assay values. According to the LDH investigation, all tested samples had higher values compared to the unstimulated cells. The evaluation of cell morphology was performed by fluorescence microscopy following cultivation of HDF cells on the obtained thin films. The cultivation of HDF's on the thin films did not induce major cellular changes. Cells cultured on the BG57+VD3_025 sample had similar morphology to that of unstimulated control cells. The inflammatory profile of human cells cultured on thin films obtained by MAPLE was analyzed by the ELISA technique. It was observed that the thin films did not change the pro- and anti-inflammatory profile of the HDF cells, the IL-6 and IL-10 levels being similar to those of the control sample. The wettability of the MAPLE thin films was investigated by the sessile drop method. A contact angle of 54.65° was measured for the sample coated with BG57+VD3_025. Electrochemical impedance spectroscopy gave a valuable insight into the electrochemical reactions occurring on the surface.
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Affiliation(s)
- Irina Negut
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG 36, 077125 Magurele, Romania; (I.N.); (B.B.); (V.G.)
| | - Gratiela Gradisteanu-Pircalabioru
- eBio-Hub Research Center, University Politehnica of Bucharest—CAMPUS, 6 Iuliu Maniu Boulevard, 061344 Bucharest, Romania;
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, 050657 Bucharest, Romania;
- Academy of Romanian Scientists, 3 Ilfov Str., District 5, 050044 Bucharest, Romania
| | - Mihaela Dinu
- National Institute of Research and Development for Optoelectronics-INOE2000, 409 Atomistilor St., 077125 Magurele, Romania; (M.D.); (A.C.P.)
| | - Bogdan Bita
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG 36, 077125 Magurele, Romania; (I.N.); (B.B.); (V.G.)
- Faculty of Physics, University of Bucharest, 077125 Magurele, Romania
| | - Anca Constantina Parau
- National Institute of Research and Development for Optoelectronics-INOE2000, 409 Atomistilor St., 077125 Magurele, Romania; (M.D.); (A.C.P.)
| | - Valentina Grumezescu
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG 36, 077125 Magurele, Romania; (I.N.); (B.B.); (V.G.)
| | - Carmen Ristoscu
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG 36, 077125 Magurele, Romania; (I.N.); (B.B.); (V.G.)
| | - Mariana Carmen Chifiriuc
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, 050657 Bucharest, Romania;
- Academy of Romanian Scientists, 3 Ilfov Str., District 5, 050044 Bucharest, Romania
- The Romanian Academy, Calea Victoriei 25, District 1, 010071 Bucharest, Romania
- Department of Microbiology, Faculty of Biology, University of Bucharest, 050095 Bucharest, Romania
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Al-Amiery A, Isahak WNRW, Al-Azzawi WK. Multi-method evaluation of a 2-(1,3,4-thiadiazole-2-yl)pyrrolidine corrosion inhibitor for mild steel in HCl: combining gravimetric, electrochemical, and DFT approaches. Sci Rep 2023; 13:9770. [PMID: 37328536 DOI: 10.1038/s41598-023-36252-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 05/31/2023] [Indexed: 06/18/2023] Open
Abstract
The corrosion inhibition properties of 2-(1,3,4-thiadiazole-2-yl)pyrrolidine (2-TP) on mild steel in a 1 M HCl solution were investigated using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and open circuit potential (OCP) measurements. In addition, DFT calculations were performed on 2-TP. The polarization curves revealed that 2-TP is a mixed-type inhibitor. The results indicate that 2-TP is an effective inhibitor for mild steel corrosion in a 1.0 M HCl solution, with an inhibition efficiency of 94.6% at 0.5 mM 2-TP. The study also examined the impact of temperature, revealing that the inhibition efficiency increases with an increasing concentration of 2-TP and decreases with a rise in temperature. The adsorption of the inhibitor on the mild steel surface followed the Langmuir adsorption isotherm, and the free energy value indicated that the adsorption of 2-TP is a spontaneous process that involves both physical and chemical adsorption mechanisms. The DFT calculations showed that the adsorption of 2-TP on the mild steel surface is mainly through the interaction of the lone pair of electrons on the nitrogen atom of the thiadiazole ring with the metal surface. The results obtained from the weight loss, potentiodynamic polarization, EIS and OCP measurements were in good agreement with each other and confirmed the effectiveness of 2-TP as a corrosion inhibitor for mild steel in 1.0 M HCl solution. Overall, the study demonstrates the potential use of 2-TP as a corrosion inhibitor in acid environments.
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Affiliation(s)
- Ahmed Al-Amiery
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia.
- University of Technology-Iraq, Energy and Renewable Energies Technology Center, Bagdad, Iraq.
| | - Wan Nor Roslam Wan Isahak
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia.
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Electrochemical corrosion and impedance studies of Ti-30Zr-xNb (x = 7, 10, 13 at.%) alloy in simulated downhole environment. J Solid State Electrochem 2023. [DOI: 10.1007/s10008-023-05430-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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10
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Mirzayev MN, Parau AC, Slavov L, Dinu M, Neov D, Slavkova Z, Popov EP, Belova M, Hasanov K, Aliyev FA, Vladescu (Dragomir) A. TiSiCN as Coatings Resistant to Corrosion and Neutron Activation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1835. [PMID: 36902950 PMCID: PMC10003883 DOI: 10.3390/ma16051835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/15/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
The aim of the present paper was to evaluate the effect of neutron activation on TiSiCN carbonitrides coatings prepared at different C/N ratios (0.4 for under stoichiometric and 1.6 for over stoichiometric). The coatings were prepared by cathodic arc deposition using one cathode constructed of Ti88 at.%-Si12 at.% (99.99% purity). The coatings were comparatively examined for elemental and phase composition, morphology, and anticorrosive properties in 3.5% NaCl solution. All the coatings exhibited f.c.c. solid solution structures and had a (111) preferred orientation. Under stoichiometric structure, they proved to be resistant to corrosive attack in 3.5% NaCl and of these coatings the TiSiCN was found to have the best corrosion resistance. From all tested coatings, TiSiCN have proven to be the most suitable candidates for operation under severe conditions that are present in nuclear applications (high temperature, corrosion, etc.).
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Affiliation(s)
- Matlab N. Mirzayev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Institute of Radiation Problems, Azerbaijan National Academy of Sciences, AZ1143 Baku, Azerbaijan
- Scientific-Research Institute Geotecnological Problems of Oil, Gas and Chemistry, Azerbaijan State Oil and Industry University, AZ1010 Baku, Azerbaijan
- Innovation & Research Center, Western Caspian University, AZ1001 Baku, Azerbaijan
| | - Anca C. Parau
- National Institute of Research and Development for Optoelectronics INOE 2000, 409 Atomistilor St., 77125 Magurele, Romania
| | - Lyubomir Slavov
- Institute of Electronics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
| | - Mihaela Dinu
- National Institute of Research and Development for Optoelectronics INOE 2000, 409 Atomistilor St., 77125 Magurele, Romania
| | - Dimitar Neov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Institute of Solid-State Physics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
| | - Zdravka Slavkova
- Institute of Solid-State Physics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
| | - Evgeni P. Popov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Institute of Solid-State Physics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
- Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
| | - Maria Belova
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - Kanan Hasanov
- Institute of Radiation Problems, Azerbaijan National Academy of Sciences, AZ1143 Baku, Azerbaijan
| | - Fuad A. Aliyev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Institute of Geology and Geophysics of Azerbaijan, National Academy of Sciences, AZ1143 Baku, Azerbaijan
| | - Alina Vladescu (Dragomir)
- National Institute of Research and Development for Optoelectronics INOE 2000, 409 Atomistilor St., 77125 Magurele, Romania
- Physical Materials Science and Composite Materials Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 30 Lenina Avenue, 634050 Tomsk, Russia
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11
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Electrochemical and biological characterization of Ti-Nb-Zr-Si alloy for orthopedic applications. Sci Rep 2023; 13:2312. [PMID: 36759646 PMCID: PMC9911760 DOI: 10.1038/s41598-023-29553-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/06/2023] [Indexed: 02/11/2023] Open
Abstract
The performance of current biomedical titanium alloys is limited by inflammatory and severe inflammatory conditions after implantation. In this study, a novel Ti-Nb-Zr-Si (TNZS) alloy was developed and compared with commercially pure titanium, and Ti-6Al-4V alloy. Electrochemical parameters of specimens were monitored during 1 h and 12 h immersion in phosphate buffered saline (PBS) as a normal, PBS/hydrogen peroxide (H2O2) as an inflammatory, and PBS/H2O2/albumin/lactate as a severe inflammatory media. The results showed an effect of the H2O2 in inflammatory condition and the synergistic behavior of H2O2, albumin, and lactate in severe inflammatory condition towards decreasing the corrosion resistance of titanium biomaterials. Electrochemical tests revealed a superior corrosion resistance of the TNZS in all conditions due to the presence of silicide phases. The developed TNZS was tested for subsequent cell culture investigation to understand its biocompatibility nature. It exhibited favorable cell-materials interactions in vitro compared with Ti-6Al-4V. The results suggest that TNZS alloy might be a competitive biomaterial for orthopedic applications.
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12
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Schwartz A, Kossenko A, Zinigrad M, Gofer Y, Borodianskiy K, Sobolev A. Hydroxyapatite Coating on Ti-6Al-7Nb Alloy by Plasma Electrolytic Oxidation in Salt-Based Electrolyte. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15207374. [PMID: 36295438 PMCID: PMC9611249 DOI: 10.3390/ma15207374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/15/2022] [Accepted: 10/19/2022] [Indexed: 05/15/2023]
Abstract
Titanium alloys have good biocompatibility and good mechanical properties, making them particularly suitable for dental and orthopedic implants. Improving their osseointegration with human bones is one of the most essential tasks. This can be achieved by developing hydroxyapatite (HA) on the treating surface using the plasma electrolytic oxidation (PEO) method in molten salt. In this study, a coating of titanium oxide-containing HA nanoparticles was formed on Ti-6Al-7Nb alloy by PEO in molten salt. Then, samples were subjected to hydrothermal treatment (HTT) to form HA crystals sized 0.5 to 1 μm. The effect of the current and voltage frequency for the creation of the coating on the morphology, chemical, and phase composition was studied. The anti-corrosion properties of the samples were studied using the potentiodynamic polarization test (PPT) and electrochemical impedance spectroscopy (EIS). An assessment of the morphology of the sample formed at a frequency of 100 Hz shows that the structure of this coating has a uniform submicron porosity, and its surface shows high hydrophilicity and anti-corrosion properties (4.90 × 106 Ohm·cm2). In this work, for the first time, the process of formation of a bioactive coating consisting of titanium oxides and HA was studied by the PEO method in molten salts.
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Affiliation(s)
- Avital Schwartz
- Department of Chemical Engineering, Ariel University, Ariel 4070000, Israel
| | - Alexey Kossenko
- Department of Chemical Engineering, Ariel University, Ariel 4070000, Israel
| | - Michael Zinigrad
- Department of Chemical Engineering, Ariel University, Ariel 4070000, Israel
| | - Yosef Gofer
- Department of Chemistry, Bar Ilan University, Ramat-Gan 5290002, Israel
| | | | - Alexander Sobolev
- Department of Chemical Engineering, Ariel University, Ariel 4070000, Israel
- Correspondence: ; Tel.: +972-3-9143085
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13
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Zhang X, Zhang Y, Su Y, Wang X, Lv R. Synthesis and Corrosion Inhibition Performance of Mannich Bases on Mild Steel in Lactic Acid Media. ACS OMEGA 2022; 7:32208-32224. [PMID: 36120014 PMCID: PMC9476531 DOI: 10.1021/acsomega.2c03545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
Heterocyclic Mannich bases, N-(3-oxo-3-phenylpro-pyl)thiazol-2-aminium chloride (DTZA) and N-(3-oxo-3-phenylpropyl)-1H-pyrazol-3-aminium chloride (DPZA), were developed for the corrosion inhibition of N80 steel in a 15 wt % lactic acid solution. Weight loss measurements, electrochemical techniques, surface characterization, and theoretical calculations were combined to investigate their anticorrosion performance and mechanism. The results showed that DTZA exhibited a satisfactory inhibitor efficiency of 97.56% with a dosage of 0.15% at 363 K, while DPZA achieved only 58.3% under the same conditions. Adsorptions of both inhibitors on the metal surface followed the Langmuir model with physical and chemical adsorptions. Based on X-ray photoelectronic spectroscopy (XPS) analysis, DFT calculations, and molecular dynamics (MD) simulations, stronger interactions between DTZA and iron than those in the case of DPZA were revealed, leading to the formation of a compact protective film on the metal surface, which is attributed to the presence of a thiazole ring in the DTZA chemical structure.
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Affiliation(s)
- Xiaoyun Zhang
- Department
of Materials Chemistry, College of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Yinhang Zhang
- Department
of Materials Chemistry, College of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Yuxin Su
- Department
of Materials Chemistry, College of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Xiaoyang Wang
- Sinopec
Research Institute of Petroleum Engineering, Beijing 102206, China
| | - Renqing Lv
- Department
of Chemistry, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China
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14
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Petrović Ž, Šarić A, Despotović I, Katić J, Peter R, Petravić M, Ivanda M, Petković M. Surface Functionalisation of Dental Implants with a Composite Coating of Alendronate and Hydrolysed Collagen: DFT and EIS Studies. MATERIALS 2022; 15:ma15155127. [PMID: 35897560 PMCID: PMC9351680 DOI: 10.3390/ma15155127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/13/2022] [Accepted: 07/19/2022] [Indexed: 11/25/2022]
Abstract
The success of the osseointegration process depends on the surface characteristics and chemical composition of dental implants. Therefore, the titanium dental implant was functionalised with a composite coating of alendronate and hydrolysed collagen, which are molecules with a positive influence on the bone formation. The results of the quantum chemical calculations at the density functional theory level confirm a spontaneous formation of the composite coating on the titanium implant, ∆G*INT = −8.25 kcal mol−1. The combination of the results of X-ray photoelectron spectroscopy and quantum chemical calculations reveals the structure of the coating. The alendronate molecules dominate in the outer part, while collagen tripeptides prevail in the inner part of the coating. The electrochemical stability and resistivity of the implant modified with the composite coating in a contact with the saliva depend on the chemical nature of alendronate and collagen molecules, as well as their inter- and intramolecular interactions. The formed composite coating provides a 98% protection to the implant after the 7-day immersion in the artificial saliva. From an application point of view, the composite coating could effectively promote osseointegration and improve the implant’s resistivity in contact with an aggressive environment such as saliva.
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Affiliation(s)
- Željka Petrović
- Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia
- Correspondence: (Ž.P.); (A.Š.)
| | - Ankica Šarić
- Division of Materials Physics, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia;
- Centre of Excellence for Advanced Materials and Sensing Device, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia
- Correspondence: (Ž.P.); (A.Š.)
| | - Ines Despotović
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia;
| | - Jozefina Katić
- Department of Electrochemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia;
| | - Robert Peter
- Faculty of Physics and Center for Micro- and Nanosciences and Technologies, University of Rijeka, R. Matejcic 2, 51000 Rijeka, Croatia; (R.P.); (M.P.)
| | - Mladen Petravić
- Faculty of Physics and Center for Micro- and Nanosciences and Technologies, University of Rijeka, R. Matejcic 2, 51000 Rijeka, Croatia; (R.P.); (M.P.)
| | - Mile Ivanda
- Division of Materials Physics, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia;
- Centre of Excellence for Advanced Materials and Sensing Device, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia
| | - Marin Petković
- Poliklinika Petković, Lašćinska cesta 97, 10000 Zagreb, Croatia;
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15
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Murphy BB, Apollo NV, Unegbu P, Posey T, Rodriguez-Perez N, Hendricks Q, Cimino F, Richardson AG, Vitale F. Vitamin C-reduced graphene oxide improves the performance and stability of multimodal neural microelectrodes. iScience 2022; 25:104652. [PMID: 35811842 PMCID: PMC9263525 DOI: 10.1016/j.isci.2022.104652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/28/2022] [Accepted: 06/16/2022] [Indexed: 11/28/2022] Open
Abstract
Nanocarbons are often employed as coatings for neural electrodes to enhance surface area. However, processing and integrating them into microfabrication flows requires complex and harmful chemical and heating conditions. This article presents a safe, scalable, cost-effective method to produce reduced graphene oxide (rGO) coatings using vitamin C (VC) as the reducing agent. We spray coat GO + VC mixtures onto target substrates, and then heat samples for 15 min at 150°C. The resulting rGO films have conductivities of ∼44 S cm−1, and are easily integrated into an ad hoc microfabrication flow. The rGO/Au microelectrodes show ∼8x lower impedance and ∼400x higher capacitance than bare Au, resulting in significantly enhanced charge storage and injection capacity. We subsequently use rGO/Au arrays to detect dopamine in vitro, and to map cortical activity intraoperatively over rat whisker barrel cortex, demonstrating that conductive VC-rGO coatings improve the performance and stability of multimodal microelectrodes for different applications. Easy, scalable, and safe reduction method to create rGO films with vitamin C VC-rGO coatings improve the performance of bare gold microelectrodes in vitro VC-rGO coatings enable the voltammetric detection of dopamine on the microscale rGO/Au electrode arrays enable high-resolution microscale recording in vivo
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Affiliation(s)
- Brendan B. Murphy
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neuroengineering and Therapeutics, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neurotrauma, Neurodegeneration and Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
| | - Nicholas V. Apollo
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neuroengineering and Therapeutics, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neurotrauma, Neurodegeneration and Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
| | - Placid Unegbu
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neuroengineering and Therapeutics, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neurotrauma, Neurodegeneration and Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
| | - Tessa Posey
- Department of Biomedical Engineering, University of South Carolina, Columbia, SC 29206, USA
| | - Nancy Rodriguez-Perez
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85281, USA
| | - Quincy Hendricks
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neuroengineering and Therapeutics, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Francesca Cimino
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neuroengineering and Therapeutics, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Andrew G. Richardson
- Center for Neuroengineering and Therapeutics, University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Flavia Vitale
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neuroengineering and Therapeutics, University of Pennsylvania, Philadelphia, PA 19104, USA
- Center for Neurotrauma, Neurodegeneration and Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
- Department of Physical Medicine and Rehabilitation, University of Pennsylvania, Philadelphia, PA 19146, USA
- Corresponding author
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16
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Navarro P, Olmo A, Giner M, Rodríguez-Albelo M, Rodríguez Á, Torres Y. Electrical Impedance of Surface Modified Porous Titanium Implants with Femtosecond Laser. MATERIALS 2022; 15:ma15020461. [PMID: 35057181 PMCID: PMC8779557 DOI: 10.3390/ma15020461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/31/2021] [Accepted: 01/04/2022] [Indexed: 01/25/2023]
Abstract
The chemical composition and surface topography of titanium implants are essential to improve implant osseointegration. The present work studies a non-invasive alternative of electrical impedance spectroscopy for the characterization of the macroporosity inherent to the manufacturing process and the effect of the surface treatment with femtosecond laser of titanium discs. Osteoblasts cell culture growths on the titanium surfaces of the laser-treated discs were also studied with this method. The measurements obtained showed that the femtosecond laser treatment of the samples and cell culture produced a significant increase (around 50%) in the absolute value of the electrical impedance module, which could be characterized in a wide range of frequencies (being more relevant at 500 MHz). Results have revealed the potential of this measurement technique, in terms of advantages, in comparison to tiresome and expensive techniques, allowing semi-quantitatively relating impedance measurements to porosity content, as well as detecting the effect of surface modification, generated by laser treatment and cell culture.
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Affiliation(s)
- Paula Navarro
- Departamento de Tecnología Electrónica, Escuela Técnica Superior de Ingeniería Informática, Universidad de Sevilla, Av. Reina Mercedes s/n, 41012 Sevilla, Spain;
- Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Escuela Politécnica Superior, Calle Virgen de África 7, 41011 Seville, Spain; (M.R.-A.); (Y.T.)
| | - Alberto Olmo
- Departamento de Tecnología Electrónica, Escuela Técnica Superior de Ingeniería Informática, Universidad de Sevilla, Av. Reina Mercedes s/n, 41012 Sevilla, Spain;
- Instituto de Microelectrónica de Sevilla, IMSE-CNM (CSIC, Universidad de Sevilla), Av. Américo Vespucio s/n, 41092 Sevilla, Spain
- Correspondence: ; Tel.: +34-954556835
| | - Mercè Giner
- Departamento de Citología e Histología Normal y Patológica, Universidad de Sevilla, Av. Doctor Fedriani s/n, 41009 Sevilla, Spain;
| | - Marleny Rodríguez-Albelo
- Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Escuela Politécnica Superior, Calle Virgen de África 7, 41011 Seville, Spain; (M.R.-A.); (Y.T.)
| | - Ángel Rodríguez
- Escuela Politécnica Superior, Universidad da Coruña, Calle Mendizábal s/n, 15403 Ferrol, Spain;
| | - Yadir Torres
- Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Escuela Politécnica Superior, Calle Virgen de África 7, 41011 Seville, Spain; (M.R.-A.); (Y.T.)
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17
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Electrochemical Behaviour of Ti and Ti-6Al-4V Alloy in Phosphate Buffered Saline Solution. MATERIALS 2021; 14:ma14247495. [PMID: 34947090 PMCID: PMC8703731 DOI: 10.3390/ma14247495] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/26/2021] [Accepted: 12/02/2021] [Indexed: 11/18/2022]
Abstract
The electrochemical behavior of commercially pure titanium (CP Ti) and Ti-6Al-4V (Grade 5) alloy in phosphate buffered saline solution (PBS, pH = 7.4) at 37 °C (i.e., in simulated physiological solution in the human body) was examined using open circuit potential measurements, linear and potentiodynamic polarization and electrochemical impedance spectroscopy methods. After the impedance measurements and after potentiodynamic polarization measurements, the surface of the samples was investigated by scanning electron microscopy, while the elemental composition of oxide film on the surface of each sample was determined by EDS analysis. The electrochemical and corrosion behavior of CP Ti and Ti-6Al-4V alloys is due to forming a two-layer model of surface oxide film, consisting of a thin barrier-type inner layer and a porous outer layer. The inner barrier layer mainly prevents corrosion of CP Ti and Ti-6Al-4V alloy, whose thickness and resistance increase sharply in the first few days of exposure to PBS solution. With longer exposure times to the PBS solution, the structure of the barrier layer subsequently settles, and its resistance increases further. Compared to Ti-6Al-4V alloy, CP Ti shows greater corrosion stability.
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18
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Reactivity and Corrosion Behaviors of Ti6Al4V Alloy Implant Biomaterial under Metabolic Perturbation Conditions in Physiological Solutions. MATERIALS 2021; 14:ma14237404. [PMID: 34885558 PMCID: PMC8658691 DOI: 10.3390/ma14237404] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/24/2021] [Accepted: 11/30/2021] [Indexed: 11/17/2022]
Abstract
The corrosion of implant biomaterials is a well-known critical issue when they are in contact with biological fluids. Therefore, the reactivity of Ti6Al4V implant biomaterials is monitored during immersion in a Hanks’ physiological solution without and with added metabolic compounds, such as lactic acid, hydrogen peroxide, and a mixture of the two. Electrochemical characterization is done by measuring the open circuit potential and electrochemical impedance spectroscopy performed at different intervals of time. Electrochemical results were completed by morphological and compositional analyses as well as X-ray diffraction before and after immersion in these solutions. The results indicate a strong effect from the inflammatory product and the synergistic effect of the metabolic lactic acid and hydrogen peroxide inflammatory compound on the reactivity and corrosion resistance of an implant titanium alloy.
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19
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Prestat M, Thierry D. Corrosion of titanium under simulated inflammation conditions: clinical context and in vitro investigations. Acta Biomater 2021; 136:72-87. [PMID: 34626820 DOI: 10.1016/j.actbio.2021.10.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/15/2021] [Accepted: 10/01/2021] [Indexed: 01/01/2023]
Abstract
Titanium and alloys thereof are widely utilized for biomedical applications in the fields of orthopedics and dentistry. The corrosion resistance and perceived biocompatibility of such materials are essentially related to the presence of a thin passive oxide layer on the surface. However, during inflammation phases, the immune system and its leukocytic cells generate highly aggressive molecules, such as hydrogen peroxide and radicals, that can significantly alter the passive film resulting in the degradation of the titanium implants. In combination with mechanical factors, this can lead to the release of metal ions, nanoparticles or microscaled debris in the surrounding tissues (which may sustain chronic inflammation), bring about relevant health issues and contribute to implant loss or failure. After briefly presenting the context of inflammation, this review article analyses the state-of-the-art knowledge of the in vitro corrosion of titanium, titanium alloys and coated titanium by reactive oxygen species and by living cells with an emphasis on electrochemical and microstructural aspects. STATEMENT OF SIGNIFICANCE: Inflammation involves the production of reactive oxygen species that are known to alter the passive layer protecting titanium implants against the aggressive environment of the human body. Inflammatory processes therefore contribute to the deterioration of biomedical devices. Although review articles on biomaterials for implant applications are regularly published in the literature, none has ever focused specifically on the topic of inflammation. After briefly recalling the clinical context, this review analyses the in vitro studies on titanium corrosion under simulated inflammation conditions from the pioneer works of the 80s and the 90s till the most recent investigations. It reports about the status of this research area for a multidisciplinary readership covering the fields of materials science, corrosion and implantology.
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Affiliation(s)
- M Prestat
- French Corrosion Institute - RISE, 220 rue Pierre Rivoalon, 29200 Brest, France.
| | - D Thierry
- French Corrosion Institute - RISE, 220 rue Pierre Rivoalon, 29200 Brest, France; Research Institutes of Sweden (RISE), Stockholm, Sweden
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20
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Seo B, Im HT, Park KB, Park K, Park HK. Effect of Iron Content on Corrosion Properties of Pure Titanium as Grain Refiner. MATERIALS 2021; 14:ma14237193. [PMID: 34885347 PMCID: PMC8658208 DOI: 10.3390/ma14237193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 11/22/2021] [Accepted: 11/22/2021] [Indexed: 11/22/2022]
Abstract
Microstructures and corrosion properties of pure titanium were characterized when iron was used as a grain refiner. The added Fe element acted as a strong grain refiner for pure titanium by forming β Ti phase at grain boundaries, and 0.15 wt% Fe was revealed to be a sufficient amount to make the grain size of pure titanium below 20 μm, which was the requirement for the desired titanium cathode. However, corrosion resistance was decreased with the Fe amount added. From the open circuit potential (OCP) results, it was obvious that the TiO2 stability against the reducing acid environment was deteriorated with the Fe amount, which seemed to be the main reason for the decreased corrosion resistance. Electrochemical impedance spectroscopy (EIS) results showed that both the decrease in the compact oxide film’s resistance (Rb) and the appearance of the outer porous film occurred as a result of the dissolution of the TiO2 layer, whose phenomena became more apparent as more Fe was added.
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21
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García-Cabezón C, Godinho V, Salvo-Comino C, Torres Y, Martín-Pedrosa F. Improved Corrosion Behavior and Biocompatibility of Porous Titanium Samples Coated with Bioactive Chitosan-Based Nanocomposites. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6322. [PMID: 34771848 PMCID: PMC8585141 DOI: 10.3390/ma14216322] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/14/2021] [Accepted: 10/18/2021] [Indexed: 11/18/2022]
Abstract
Porous titanium implants can be a good solution to solve the stress shielding phenomenon. However, the presence of pores compromises mechanical and corrosion resistance. In this work, porous titanium samples obtained using a space-holder technique are coated with Chitosan, Chitosan/AgNPs and Chitosan/Hydroxyapatite using only one step and an economic electrodeposition method. The coatings' topography, homogeneity and chemical composition were analyzed. A study of the effect of the porosity and type of coating on corrosion resistance and cellular behavior was carried out. The electrochemical studies reveal that porous samples show high current densities and an unstable oxide film; therefore, there is a need for surface treatments to improve corrosion resistance. The Chitosan coatings provide a significant improvement in the corrosion resistance, but the Chitosan/AgNPs and Chitosan/HA coatings showed the highest protection efficiency, especially for the more porous samples. Furthermore, these coatings have better adherence than the chitosan coatings, and the higher surface roughness obtained favors cell adhesion and proliferation. Finally, a combination of coating and porous substrate material with the best biomechanical balance and biofunctional behavior is proposed as a potential candidate for the replacement of small, damaged bone tissues.
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Affiliation(s)
- Cristina García-Cabezón
- Departamento de Ciencia de Materiales e Ingeniería Metalúrgica, Escuela de Ingenierías Industriales, Universidad de Valladolid, Calle Paseo del Cace 59, 47011 Valladolid, Spain;
| | - Vanda Godinho
- Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Escuela Politécnica Superior, Calle Virgen de África 7, 41011 Sevilla, Spain; (V.G.); (Y.T.)
| | - Coral Salvo-Comino
- Departamento de Química Inorgánica, Escuela de Ingenierías Industriales, Universidad de Valladolid, Calle Paseo del Cace 59, 47011 Valladolid, Spain;
| | - Yadir Torres
- Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Escuela Politécnica Superior, Calle Virgen de África 7, 41011 Sevilla, Spain; (V.G.); (Y.T.)
| | - Fernando Martín-Pedrosa
- Departamento de Ciencia de Materiales e Ingeniería Metalúrgica, Escuela de Ingenierías Industriales, Universidad de Valladolid, Calle Paseo del Cace 59, 47011 Valladolid, Spain;
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22
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Amorphous Porous Molybdenum Dioxide as an Efficient Supercapacitor Electrode Material. CRYSTAL RESEARCH AND TECHNOLOGY 2021. [DOI: 10.1002/crat.202100083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Asserghine A, Ashrafi AM, Mukherjee A, Petrlak F, Heger Z, Svec P, Richtera L, Nagy L, Souto RM, Nagy G, Adam V. In Situ Investigation of the Cytotoxic and Interfacial Characteristics of Titanium When Galvanically Coupled with Magnesium Using Scanning Electrochemical Microscopy. ACS APPLIED MATERIALS & INTERFACES 2021; 13:43587-43596. [PMID: 34473486 DOI: 10.1021/acsami.1c10584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Recently, the cytotoxic properties of galvanically coupled Ti-Mg particles have been shown in different cells. This cytotoxic effect has been attributed mainly to Mg due to its tendency to undergo activation when coupled with Ti, forming a galvanic cell consisting of an anode (Mg) and a cathode (Ti). However, the role of the Ti cathode has been ignored in explaining the cytotoxic effect of Ti-Mg particles due to its high resistance to corrosion. In this work, the role of titanium (Ti) in the cytotoxic mechanism of galvanically coupled Ti-Mg particles was examined. A model galvanic cell (MGC) was prepared to simulate the Mg-Ti particles. The electrochemical reactivity of the Ti sample and the pH change in it due to galvanic coupling with Mg were investigated using scanning electrochemical microscopy (SECM). It was observed that the Ti surface changed from passive to electrochemically active when coupled with Mg. Furthermore, after only 15 min of galvanic coupling with Mg, the pH in the electrolyte volume adjacent to the Ti surface increased to an alkaline pH value. The effects of the galvanic coupling of Ti and Mg, as well as those of the alkaline pH environment, on the viability of Hs27 fibroblast cells were investigated. It was shown that the viability of Hs27 cells significantly diminished when Mg and Ti were galvanically coupled compared to when the two metals were electrically disconnected. Thus, although Ti usually exhibited high corrosion resistance when exposed to physiological environments, an electrochemically active surface was observed when galvanically coupled with Mg, and this surface may participate in electron transfer reactions with chemical species in the neighboring environment; this participation resulted in the increased pH values above its surface and enhanced generation of reactive oxygen species. These features contributed to the development of cytotoxic effects by galvanically coupled Ti-Mg particles.
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Affiliation(s)
- Abdelilah Asserghine
- Department of General and Physical Chemistry, Faculty of Sciences, University of Pecs, Ifjussg u. 6, Pecs 7624, Hungary
- Laboratoire Interfaces et Systemes Electrochimiques (LISE), Sorbonne Universite, CNRS, 4 Place Jussieu, Paris F-75005, France
| | - Amir M Ashrafi
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1665/1, Brno 613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno CZ-612 00, Czech Republic
| | - Atripan Mukherjee
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1665/1, Brno 613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno CZ-612 00, Czech Republic
| | - Frantisek Petrlak
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1665/1, Brno 613 00, Czech Republic
| | - Zbynek Heger
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1665/1, Brno 613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno CZ-612 00, Czech Republic
| | - Pavel Svec
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1665/1, Brno 613 00, Czech Republic
| | - Lukas Richtera
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1665/1, Brno 613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno CZ-612 00, Czech Republic
| | - Livia Nagy
- Department of General and Physical Chemistry, Faculty of Sciences, University of Pecs, Ifjussg u. 6, Pecs 7624, Hungary
- Janos Szentagothai Research Center, University of Pecs, Ifjusag u. 20, Pecs 7624, Hungary
| | - Ricardo M Souto
- Institute of Material Science and Nanotechnology, University of La Laguna, P.O. Box 456, La Laguna E-38200, Tenerife, Canary Islands, Spain
| | - Geza Nagy
- Department of General and Physical Chemistry, Faculty of Sciences, University of Pecs, Ifjussg u. 6, Pecs 7624, Hungary
- Janos Szentagothai Research Center, University of Pecs, Ifjusag u. 20, Pecs 7624, Hungary
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1665/1, Brno 613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno CZ-612 00, Czech Republic
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Hydroxyapatite and Silicon-Modified Hydroxyapatite as Drug Carriers for 4-Aminopyridine. CRYSTALS 2021. [DOI: 10.3390/cryst11091124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Adsorption and desorption properties of nano-hydroxyapatite (HAP) and silicon-modified hydroxyapatite (Si–HAP) were investigated with 4-aminopyridine (fampridine-4AP). The novelty of this research is the investigation of the suitability of the previously mentioned carriers for drug-delivery of 4AP. UV-VIS spectrophotometric results showed that the presence of silicon in the carrier did not significantly affect its adsorption capacity. The success of the adsorption was confirmed by thermal analysis (TG/DTA), scanning electron microscopy (SEM)/energy dispersive X-ray (EDX), Fourier transform infrared (FTIR) spectroscopy, and X-ray powder diffraction (XRPD). Drug release experiments, performed in simulated body fluid (SBF), revealed a drug release from Si–HAP that was five times slower than HAP, explained by the good chemical bonding between the silanol groups of the carrier and the 4AP functional groups. The electrochemical measurements showed a value of the polarization resistance of the charge transfer (Rct) more than five times smaller in the case of Si–HAP coating loaded with 4AP, so the charge transfer process was hindered. The electrochemical impedance results revealed that electron transfer was inhibited in the presence of 4AP, in concordance with the previously mentioned strong bonds. The silicon substitution in HAP leads to good chemical bonding with the drug and a slow release, respectively.
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Garcia-Falcon CM, Gil-Lopez T, Verdu-Vazquez A, Mirza-Rosca JC. Analysis and Comparison of the Corrosive Behavior of Nickel-Based and Cobalt-Based Dental Alloys. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4949. [PMID: 34501039 PMCID: PMC8434020 DOI: 10.3390/ma14174949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/22/2021] [Accepted: 08/23/2021] [Indexed: 11/23/2022]
Abstract
Nickel-based and cobalt-based metal alloys are frequently used in dentistry. The introduction of various elements in the alloy changes its characteristics, and a thorough study of each alloy should be completed to determine its appropriate corrosion resistance and biocompatibility in contact with physiological fluids. There are scarce investigations on these widely used dental alloys in Ringer solution, and findings in this research bring new experimental data and information. The present study evaluated and compared the corrosion behavior of six NiCr- and two CoCr-based dental materials in Ringer solution, using the following techniques: potentiostatic polarization curves (chronoamperometry), microstructural analysis, and EIS (electrochemical impedance spectroscopy). The results obtained in this investigation showed that in the NiCr-based specimens Ni4, Ni5, and Ni6 the stability of the passive layer was destroyed after polarization and a development and growth of stable pits was found in the microstructural analysis after electrochemical treatment. In terms of susceptibility to corrosion, two different groups of specimens were derived from this investigation. A first group which included the two CoCr (Co1 and Co2) and three of the six NiCr alloys studied (Ni1, Ni2, and Ni3). A second group with the other NiCr alloys investigated Ni4, Ni5, and Ni6.
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Affiliation(s)
- Carmen Marina Garcia-Falcon
- Nanoscience and Nanomaterials, Department of Mechanical Engineering, University of Las Palmas de Gran Canaria, 35017 Las Palmas, Spain; (C.M.G.-F.); (J.C.M.-R.)
| | - Tomas Gil-Lopez
- Science and Engineering, Department of Building Technology, Madrid Polytechnic University, 28040 Madrid, Spain;
| | - Amparo Verdu-Vazquez
- Science and Engineering, Department of Building Technology, Madrid Polytechnic University, 28040 Madrid, Spain;
| | - Julia Claudia Mirza-Rosca
- Nanoscience and Nanomaterials, Department of Mechanical Engineering, University of Las Palmas de Gran Canaria, 35017 Las Palmas, Spain; (C.M.G.-F.); (J.C.M.-R.)
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Eid K, Sliem MH, Abdullah AM. Tailoring the defects of sub-100 nm multipodal titanium nitride/oxynitride nanotubes for efficient water splitting performance. NANOSCALE ADVANCES 2021; 3:5016-5026. [PMID: 36132349 PMCID: PMC9419868 DOI: 10.1039/d1na00274k] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 07/09/2021] [Indexed: 05/31/2023]
Abstract
Deciphering the photocatalytic-defect relationship of photoanodes can pave the way towards the rational design for high-performance solar energy conversion. Herein, we rationally designed uniform and aligned ultrathin sub-100 nm multipodal titanium nitride/oxynitride nanotubes (TiON x NTs) (x = 2, 4, and 6 h) via the anodic oxidation of Ti-foil in a formamide-based electrolyte followed by annealing under ammonia gas for different durations. XPS, XPS imaging, Auger electron spectra, and positron annihilation spectroscopy disclosed that the high nitridation rate induced the generation of a mixture of Ti-nitride and oxynitride with various vacancy-type defects, including monovacancies, vacancy clusters, and a few voids inside TiO x NTs. These defects decreased the bandgap energy to 2.4 eV, increased visible-light response, and enhanced the incident photon-to-current collection efficiency (IPCE) and the photocurrent density of TiON x NTs by nearly 8 times compared with TiO2NTs, besides a quick carrier diffusion at the nanotube/electrolyte interface. The water-splitting performance of sub-100 nm TiON6NT multipodal nanotubes was superior to the long compacted TiON x NTs with different lengths and TiO2 nanoparticles. Thus, the optimization of the nitridation rate tailors the defect concentration, thereby achieving the highest solar conversion efficiency.
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Affiliation(s)
- Kamel Eid
- Gas Processing Center, College of Engineering, Qatar University P. O. Box 2713 Doha Qatar
| | - Mostafa H Sliem
- Center for Advanced Materials, Qatar University P. O. Box 2713 Doha Qatar
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Winiarski J, Niciejewska A, Górnik M, Jakubowski J, Tylus W, Szczygieł B. Titanium anodizing in a choline dihydrogencitrate salt-oxalic acid deep eutectic solvent: a step towards green chemistry in surface finishing of titanium and its alloys. RSC Adv 2021; 11:21104-21115. [PMID: 35479357 PMCID: PMC9034025 DOI: 10.1039/d1ra01655e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 06/07/2021] [Indexed: 11/21/2022] Open
Abstract
Deep Eutectic Solvents (DESs) are “green” competitors for some conventional plating baths and electrolytes used for surface modification. Their use allows a material to be obtained with a structure different from that observed in conventional plating or finishing technologies. In this work the titanium anodizing process was investigated in a bath based on a choline dihydrogencitrate salt and oxalic acid (1 : 1 molar ratio) green solvent. Titanium anodized at the lowest voltage applied (10 V) was a deep yellow color, which turned to deep blue at 30 V. The surface morphology and topography of titanium, both anodized and untreated, were monitored by optical, scanning electron (SEM and HR-SEM) and atomic force (AFM) microscopy. Anodizing at 10 V produced a fine granular morphology of the oxide layer, while anodizing at 30 V led to the formation of a probably thicker and quite uneven oxide layer, characterized by a distinct and coarse granular morphology. The average size of the micro-nodules was higher than those at 10 V and porous structures have been also identified. According to X-ray photoelectron spectroscopy (XPS) the stoichiometric TiO2, regardless of the applied voltage during anodizing, was practically the only component of the oxide layer produced on titanium in the DES bath. At 10 V, the oxide layer was thicker (>10 nm) than the natural Ti passive layer (approx. 2.2 nm), which, apart from TiO2, also contained oxides of titanium at lower oxidation states, i.e. +2 and +3. Moreover, the XPS technique was supported by electrochemical impedance spectroscopy (EIS), especially in the context of the structure of the oxide layer and its interaction with a corrosive environment. The corrosion resistance of anodized titanium was assessed in 0.05 mol dm−3 solution of NaCl by the linear polarization resistance (LPR) technique and polarization curves. During interpretation of the impedance spectra, the layers produced by the anodizing process were described using the two-layer model. It was assumed that the inner layer formed directly on the surface of metallic titanium was responsible for the barrier properties (resistance of 2.8 MΩ cm2). The porous outer layer formed on it has a much lower corrosion resistance, i.e. 800–1300 Ω cm2. Fabrication of nanometric color TiO2 layers through polarization of titanium in a choline dihydrogencitrate–oxalic acid DES anodizing bath.![]()
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Affiliation(s)
- Juliusz Winiarski
- Group of Surface Technology, Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland +48-713280425 +48-713203193
| | - Anna Niciejewska
- Group of Surface Technology, Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland +48-713280425 +48-713203193
| | - Monika Górnik
- Group of Surface Technology, Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland +48-713280425 +48-713203193
| | - Jakub Jakubowski
- Technolutions Miłosz Czajkowski Otolice 38, 99-400 Łowicz Poland
| | - Włodzimierz Tylus
- Group of Surface Technology, Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland +48-713280425 +48-713203193
| | - Bogdan Szczygieł
- Group of Surface Technology, Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland +48-713280425 +48-713203193
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The effect of surface preparation on the protective properties of Al2O3 and HfO2 thin films deposited on cp-titanium by atomic layer deposition. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137431] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Zambrano Carrullo J, Dalmau Borrás A, Amigó Borrás V, Navarro-Laboulais J, Pereira Falcón J. Electrochemical corrosion behavior and mechanical properties of Ti–Ag biomedical alloys obtained by two powder metallurgy processing routes. J Mech Behav Biomed Mater 2020; 112:104063. [DOI: 10.1016/j.jmbbm.2020.104063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/11/2020] [Accepted: 08/22/2020] [Indexed: 01/12/2023]
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Yamaguchi H, Takahashi M, Sasaki K, Takada Y. Wear resistance of cast dental Ti-Fe alloys. Dent Mater J 2020; 40:68-73. [PMID: 32848102 DOI: 10.4012/dmj.2019-336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Binary Ti-Fe alloys with 5-25 mass% Fe were prepared, and subjected to reciprocating wear test. The aim of this study was to investigate the relationship between mechanical properties and the wear resistance of titanium and Ti-Fe alloys. The dimensions (length, width and depth) of wear marks on Ti-Fe alloys were less than those observed on pure Ti specimen. Wear resistance of Ti-Fe alloys was better than that of pure titanium. It was established that hardness was the main factor that influenced wear resistance of Ti-Fe alloys. Single β Ti-Fe alloys showed better wear resistance than α+β Ti-Fe alloys. Increase in concentration of Fe in the β phase of Ti-Fe alloys leads to improved wear resistance of the alloy. Ti-Fe alloys with 11-15 mass% Fe form ideal candidates for fabrication of dental titanium alloys with excellent wear resistance.
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Affiliation(s)
- Hirofumi Yamaguchi
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry.,Division of Dental Biomaterials, Tohoku University Graduate School of Dentistry
| | - Masatoshi Takahashi
- Division of Dental Biomaterials, Tohoku University Graduate School of Dentistry
| | - Keiichi Sasaki
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry
| | - Yukyo Takada
- Division of Dental Biomaterials, Tohoku University Graduate School of Dentistry
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31
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Olmo A, Hernández M, Chicardi E, Torres Y. Characterization and Monitoring of Titanium Bone Implants with Impedance Spectroscopy. SENSORS 2020; 20:s20164358. [PMID: 32764276 PMCID: PMC7472105 DOI: 10.3390/s20164358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/27/2020] [Accepted: 08/03/2020] [Indexed: 12/30/2022]
Abstract
Porous titanium is a metallic biomaterial with good properties for the clinical repair of cortical bone tissue, although the presence of pores can compromise its mechanical behavior and clinical use. It is therefore necessary to characterize the implant pore size and distribution in a suitable way. In this work, we explore the new use of electrical impedance spectroscopy for the characterization and monitoring of titanium bone implants. Electrical impedance spectroscopy has been used as a non-invasive route to characterize the volumetric porosity percentage (30%, 40%, 50% and 60%) and the range of pore size (100–200 and 355–500 mm) of porous titanium samples obtained with the space-holder technique. Impedance spectroscopy is proved to be an appropriate technique to characterize the level of porosity of the titanium samples and pore size, in an affordable and non-invasive way. The technique could also be used in smart implants to detect changes in the service life of the material, such as the appearance of fractures, the adhesion of osteoblasts and bacteria, or the formation of bone tissue.
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Affiliation(s)
- Alberto Olmo
- Instituto de Microelectrónica de Sevilla, IMSE-CNM (CSIC, Universidad de Sevilla), Av. Américo Vespucio, sn, 41092 Sevilla, Spain;
- Escuela Técnica Superior de Ingeniería Informática, Departamento de Tecnología Electrónica, Universidad de Sevilla, Av. Reina Mercedes sn, 41012 Sevilla, Spain
- Correspondence: ; Tel.: +34-09-5455-4325
| | - Miguel Hernández
- Instituto de Microelectrónica de Sevilla, IMSE-CNM (CSIC, Universidad de Sevilla), Av. Américo Vespucio, sn, 41092 Sevilla, Spain;
- Escuela Técnica Superior de Ingeniería Informática, Departamento de Tecnología Electrónica, Universidad de Sevilla, Av. Reina Mercedes sn, 41012 Sevilla, Spain
| | - Ernesto Chicardi
- Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Escuela Superior de Ingenieros, Universidad de Sevilla, 41092 Sevilla, Spain;
| | - Yadir Torres
- Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Escuela Politécnica Superior, Calle Virgen de África, 7, 41011 Sevilla, Spain;
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Petrović Ž, Šarić A, Despotović I, Katić J, Peter R, Petravić M, Petković M. A New Insight into Coating's Formation Mechanism Between TiO 2 and Alendronate on Titanium Dental Implant. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3220. [PMID: 32698367 PMCID: PMC7411690 DOI: 10.3390/ma13143220] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/14/2020] [Accepted: 07/17/2020] [Indexed: 11/16/2022]
Abstract
Organophosphorus compounds, like bisphosphonates, drugs for treatment and prevention of bone diseases, have been successfully applied in recent years as bioactive and osseoinductive coatings on dental implants. An integrated experimental-theoretical approach was utilized in this study to clarify the mechanism of bisphosphonate-based coating formation on dental implant surfaces. Experimental validation of the alendronate coating formation on the titanium dental implant surface was carried out by X-ray photoelectron spectroscopy and contact angle measurements. Detailed theoretical simulations of all probable molecular implant surface/alendronate interactions were performed employing quantum chemical calculations at the density functional theory level. The calculated Gibbs free energies of (TiO2)10-alendronate interaction indicate a more spontaneous exergonic process when alendronate molecules interact directly with the titanium surface via two strong bonds, Ti-N and Ti-O, through simultaneous participation common to both phosphonate and amine branches. Additionally, the stability of the alendronate-modified implant during 7 day-immersion in a simulated saliva solution has been investigated by using electrochemical impedance spectroscopy. The alendronate coating was stable during immersion in the artificial saliva solution and acted as an additional barrier on the implant with overall resistivity, R ~ 5.9 MΩ cm2.
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Affiliation(s)
- Željka Petrović
- Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia
| | - Ankica Šarić
- Division of Materials Physics, Centre of Excellence for Advanced Materials and Sensing Device, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia
| | - Ines Despotović
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia;
| | - Jozefina Katić
- Department of Electrochemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia;
| | - Robert Peter
- Department of Physics and Center for Micro- and Nanosciences and Technologies, University of Rijeka, R. Matejcic 2, 51000 Rijeka, Croatia; (R.P.); (M.P.)
| | - Mladen Petravić
- Department of Physics and Center for Micro- and Nanosciences and Technologies, University of Rijeka, R. Matejcic 2, 51000 Rijeka, Croatia; (R.P.); (M.P.)
| | - Marin Petković
- Adentro dental studio, Petrova ul. 67, 10000 Zagreb, Croatia;
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Alternating current oxidation of Ti–6Al–4V alloy in oxalic acid for corrosion resistant surface finishing. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2905-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Agrawal RK, Pandey V, Barhanpurkar-Naik A, Wani MR, Chattopadhyay K, Singh V. Effect of ultrasonic shot peening duration on microstructure, corrosion behavior and cell response of cp-Ti. ULTRASONICS 2020; 104:106110. [PMID: 32146383 DOI: 10.1016/j.ultras.2020.106110] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 11/10/2019] [Accepted: 02/10/2020] [Indexed: 06/10/2023]
Abstract
Surface mechanical attrition treatment (SMAT) of metallic biomaterials has gained significant importance due to its ability to develop nano structure in the surface region. In the present study, the microstructural changes and corrosion behavior of the commercially pure titanium (cp-Ti), following different durations of ultrasonic shot peening (USSP) has been investigated. cp-Ti was shot peened for different durations from 0 to 120 s and the treated samples were examined for microstructural changes in the surface region, cell viability and corrosion behavior. Cell viability was considerably increased after USSP for 60-120 s, exhibiting maximum for the 90 s of USSP. The passivation tendency was also improved with peening duration up to 90 s, however, it declined for longer duration of USSP. The beneficial effects of USSP may be attributed to nano structuring in the surface region and development of higher positive potentials at the USSP treated surface. Transmission Electron Microscope (TEM) examination of the USSPed surface revealed dislocation entanglement and substructure. Also, higher surface volta potential was observed over the USSPed sample exhibiting better cell proliferation. The present work is corollary to previous work of the group and mainly discusses the role of USSP duration, as a process parameter, on the cell viability and corrosion resistance of cp-Ti.
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Affiliation(s)
- Rahul Kumar Agrawal
- Department of Metallurgical Engineering, Indian Institute of Technology (B.H.U.), Varanasi 221005, Uttar Pradesh, India
| | - Vaibhav Pandey
- Department of Metallurgical Engineering, Indian Institute of Technology (B.H.U.), Varanasi 221005, Uttar Pradesh, India
| | | | - Mohan R Wani
- Bone Research Laboratory, National Centre for Cell Science, Pune 411007, Maharashtra, India
| | - Kausik Chattopadhyay
- Department of Metallurgical Engineering, Indian Institute of Technology (B.H.U.), Varanasi 221005, Uttar Pradesh, India
| | - Vakil Singh
- Department of Metallurgical Engineering, Indian Institute of Technology (B.H.U.), Varanasi 221005, Uttar Pradesh, India.
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35
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Ahmad I, Shoaib Akhtar M, Ahmed E, Ahmad M, Keller V, Qamar Khan W, Khalid N. Rare earth co-doped ZnO photocatalysts: Solution combustion synthesis and environmental applications. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116328] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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36
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Trincă LC, Mareci D, Solcan C, Fantanariu M, Burtan L, Vulpe V, Hriţcu LD, Souto RM. RETRACTED: In vitro corrosion resistance and in vivo osseointegration testing of new multifunctional beta-type quaternary TiMoZrTa alloys. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 108:110485. [PMID: 31924054 DOI: 10.1016/j.msec.2019.110485] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 07/26/2018] [Accepted: 11/21/2019] [Indexed: 02/02/2023]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of authors. Due to communication issues between Professor dr. Lucia Carmen Trincă and Professor dr. Vizureanu Petrica and Assist. dr. Bălţatu Simona, the first author was not aware that the specimens processed by corrosion by Assoc. Professor dr. Daniel Mareci and evaluated in the aforementioned article would be included by Assistant dr. Bălţatu Simona in her PhD thesis that was defended in June 2017 and then in an international patent application (Indonesia) No: PI 2019006569, in November 2019. The authors understand and respect the intellectual property rights of the international (Indonesia) patent application holders no: PI 2019006569/2019 and thus request the retraction of the article.
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Affiliation(s)
- Lucia Carmen Trincă
- "Ion Ionescu de la Brad" University of Agricultural Science and Veterinary Medicine, Exact Sciences Department, 700490, Iasi, Romania.
| | - Daniel Mareci
- "Gheorghe Asachi" Technical University of Iasi, Department of Chemical Engineering, 700050, Iasi, Romania
| | - Carmen Solcan
- "Ion Ionescu de la Brad" University of Agricultural Science and Veterinary Medicine, Preclinics Department, 700489, Iasi, Romania
| | - Mircea Fantanariu
- "Ion Ionescu de la Brad" University of Agricultural Science and Veterinary Medicine, Clinics Department, 700489, Iasi, Romania
| | - Liviu Burtan
- "Ion Ionescu de la Brad" University of Agricultural Science and Veterinary Medicine, Clinics Department, 700489, Iasi, Romania.
| | - Vasile Vulpe
- "Ion Ionescu de la Brad" University of Agricultural Science and Veterinary Medicine, Clinics Department, 700489, Iasi, Romania
| | - Luminiţa-Diana Hriţcu
- "Ion Ionescu de la Brad" University of Agricultural Science and Veterinary Medicine, Clinics Department, 700489, Iasi, Romania
| | - Ricardo Manuel Souto
- Department of Chemistry, Universidad de La Laguna, Avda. Astrofisico Sanchez s/n, 38205 La Laguna, Tenerife (Canary Islands), Spain; Instituto Universitario de Materiales y Nanotecnologias, Universidad de La Laguna, P.O. Box 456, 38200 La Laguna, Tenerife (Canary Islands), Spain.
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Srimaneepong V, Rokaya D, Thunyakitpisal P, Qin J, Saengkiettiyut K. Corrosion Resistance of Graphene oxide/Silver Coatings on Ni-Ti alloy and Expression of IL-6 and IL-8 in Human Oral Fibroblasts. Sci Rep 2020; 10:3247. [PMID: 32094428 PMCID: PMC7039972 DOI: 10.1038/s41598-020-60070-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 12/31/2019] [Indexed: 02/06/2023] Open
Abstract
Graphene based materials (GBMs) have potentials for dental and medical applications. GBMs may cause changes in the levels of cytokine released in the body. This study aimed to study the corrosion resistance of graphene oxide (GO) and GO/silver (GO/Ag) nanocomposite coated nickel-titanium (NiTi) alloy by electrophoretic deposition and to access the viability of human pulp fibroblasts, and the interleukin (IL)-6 and IL-8 expression level. The bare and coated NiTi samples were characterized by scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), Raman spectroscopy, surface profilometry, and X-ray diffraction (XRD). The corrosion resistance of the bare NiTi and coated NiTi samples were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy in 3.5% NaCl solution. The cell viability of human pulp fibroblasts was accessed by the treated culture medium of the bare NiTi and coated NiTi alloys containing 1% fetal bovine serum. IL-6 and IL-8 expression levels were studied by human enzyme-linked immunosorbent assay (ELISA). Data were analyzed using One-way ANOVA (α = 0.05). Both the GO-coated NiTi and GO/Ag-coated NiTi alloys showed better corrosion resistance, a lower rate of corrosion, and higher protection efficiency than the bare NiTi alloy. The coated NiTi alloys were biocompatible to human pulp fibroblasts and showed upregulation of IL-6 and IL-8 levels.
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Affiliation(s)
- Viritpon Srimaneepong
- Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Dinesh Rokaya
- Research Unit of Herbal Medicine, Biomaterials and Materials for Dental Treatment, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
| | - Pasutha Thunyakitpisal
- Research Unit of Herbal Medicine, Biomaterials and Materials for Dental Treatment, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.,Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Jiaqian Qin
- Metallurgy and Materials Science Research Institute (MMRI), Chulalongkorn University, Bangkok, Thailand
| | - Kanokwan Saengkiettiyut
- Metallurgy and Materials Science Research Institute (MMRI), Chulalongkorn University, Bangkok, Thailand
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38
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Farkaš B, Terranova U, de Leeuw NH. Binding modes of carboxylic acids on cobalt nanoparticles. Phys Chem Chem Phys 2020; 22:985-996. [PMID: 31829369 DOI: 10.1039/c9cp04485j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Owing to their high saturation magnetisation, cobalt nanoparticles hold significant potential for the hyperthermia treatment of tumours. Covalent binding of carboxylic acids to the nanoparticles can induce biocompatibility, whilst also preventing the formation of surface oxides which reduce the magnetic properties of cobalt. Understanding the origin of the acid-metal interaction is key, yet probably the most experimentally challenging step, for the rational design of such entities. In this density functional theory study, we use static calculations to establish that a 57-atom Co cluster is the smallest model able to reproduce the adsorption behaviour of carboxylic acids, and ab initio metadynamics to obtain the structure and the free energy landscape for its interaction with valeric acid. Our simulations show that a bridging bidentate binding mode has a stronger affinity compared to monodentate binding, with energetically high transition barriers between the two. A chelate interaction mode of two carboxyl oxygen atoms can be formed as an intermediate. These results clarify the organic-inorganic interactions in the cobalt-acid system, providing a basis for the rational design of biocompatible metallic nanoparticles.
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Affiliation(s)
- Barbara Farkaš
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK.
| | - Umberto Terranova
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK.
| | - Nora H de Leeuw
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK. and Department of Earth Sciences, Utrecht University, 3508 TA, Utrecht, The Netherlands
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Improvement of the Corrosion Resistance of Biomedical Zr-Ti Alloys Using a Thermal Oxidation Treatment. METALS 2020. [DOI: 10.3390/met10020166] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Binary Zr-Ti alloys spontaneously develop a tenacious and compact oxide layer when their fresh surface is exposed either to air or to aqueous environments. Electrochemical impedance spectroscopy (EIS) analysis of Zr-45Ti, Zr-25Ti, and Zr-5Ti exposed to simulated physiological solutions at 37 °C evidences the formation of a non-sealing bilayer oxide film that accounts for the corrosion resistance of the materials. Unfortunately, these oxide layers may undergo breakdown and stable pitting corrosion regimes at anodic potentials within the range of those experienced in the human body under stress and surgical conditions. Improved corrosion resistance has been achieved by prior treatment of these alloys using thermal oxidation in air. EIS was employed to measure the corrosion resistance of the Zr-Ti alloys in simulated physiological solutions of a wide pH range (namely 3 ≤ pH ≤ 8) at 37 °C, and the best results were obtained for the alloys pre-treated at 500 °C. The formation of the passivating oxide layers in simulated physiological solution was monitored in situ using scanning electrochemical microscopy (SECM), finding a transition from an electrochemically active surface, characteristic of the bare metal, to the heterogeneous formation of oxide layers behaving as insulating surfaces towards electron transfer reactions.
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40
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Anodic characteristics and electrochemical machining of two typical γ-TiAl alloys and its quantitative dissolution model in NaNO3 solution. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135429] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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41
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Zhang D, Nagayama G. Effective Wetting Area Based on Electrochemical Impedance Analysis: Hydrophilic Structured Surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:16508-16513. [PMID: 31756299 DOI: 10.1021/acs.langmuir.9b03349] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Wettability on nano/microstructured surfaces is gaining remarkable interest for a wide range of applications; however, little is known about the effective wetting area of the solid-liquid interface. In this study, the effect of wettability on electrochemical impedance was experimentally investigated to obtain a better understanding of the effective wetting area. We demonstrate that the water contact angle decreases significantly at hydrophilic surfaces with denser nano/microstructures. Based on the analysis of equivalent electrical circuits, we found that the electrochemical impedance decreases with reducing the water contact angle, showing a dependence on the effective wetting area, i.e., the real solid-liquid contact area. Also, the charge transfer resistance at low frequency was found to be the dominant parameter to estimate the effective wetting area at the solid-liquid interface.
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Affiliation(s)
- Dejian Zhang
- Graduate School of Engineering , Kyushu Institute of Technology , Sensui 1-1 , Tobata, Kitakyushu , Fukuoka 804-8550 , Japan
| | - Gyoko Nagayama
- Department of Mechanical Engineering , Kyushu Institute of Technology , Sensui 1-1 , Tobata, Kitakyushu , Fukuoka 804-8550 , Japan
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42
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Corrosion Resistance of Anodic Layers Grown on 304L Stainless Steel at Different Anodizing Times and Stirring Speeds. COATINGS 2019. [DOI: 10.3390/coatings9110706] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Different chemical and physical treatments have been used to improve the properties and functionalities of steels. Anodizing is one of the most promising treatments, due to its versatility and easy industrial implementation. It allows the growth of nanoestructured oxide films with interesting properties able to be employed in different industrial sectors. The present work studies the influence of the anodizing time (15, 30, 45 and 60 min), as well as the stirring speed (0, 200, 400, and 600 rpm), on the morphology and the corrosion resistance of the anodic layers grown in 304L stainless steel. The anodic layers were characterized morphologically, compositionally, and electrochemically, in order to determine the influence of the anodization parameters on their corrosion behavior in a 0.6 mol L−1 NaCl solution. The results show that at 45 and 60 min anodizing times, the formation of two microstructures is favored, associated with the collapse of the nanoporous structures at the metal-oxide interphace. However, both the stirring speed and the anodizing time have a negligeable effect on the corrosion behavior of the anodized 304L SS samples, since their electrochemical values are similar to those of the non-anodized ones.
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43
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Bioactive Coating on Titanium Dental Implants for Improved Anticorrosion Protection: A Combined Experimental and Theoretical Study. COATINGS 2019. [DOI: 10.3390/coatings9100612] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In recent years, extensive studies have been continuously undertaken on the design of bioactive and biomimetic dental implant surfaces due to the need for improvement of the implant–bone interface properties. In this paper, the titanium dental implant surface was modified by bioactive vitamin D3 molecules by a self-assembly process in order to form an improved anticorrosion coating. Surface characterization of the modified implant was performed by field emission scanning electron microscopy (FE-SEM), attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), and contact angle measurements (CA). The implant’s electrochemical stability during exposure to an artificial saliva solution was monitored in situ by electrochemical impedance spectroscopy (EIS). The experimental results obtained were corroborated by means of quantum chemical calculations at the density functional theory level (DFT). The formation mechanism of the coating onto the titanium implant surface was proposed. During a prolonged immersion period, the bioactive coating effectively prevented a corrosive attack on the underlying titanium (polarization resistance in order of 107 Ω cm2) with ~95% protection effectiveness.
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44
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Cheng KY, Gopal V, McNallan M, Manivasagam G, Mathew MT. Enhanced Tribocorrosion Resistance of Hard Ceramic Coated Ti-6Al-4V Alloy for Hip Implant Application: In-Vitro Simulation Study. ACS Biomater Sci Eng 2019; 5:4817-4824. [PMID: 33448824 DOI: 10.1021/acsbiomaterials.9b00609] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Developing coatings for various applications is an area of research of uttermost importance, to protect surfaces from severe damage by improving the wear and corrosion resistance of the materials. Recently, there has been increasing interest in ceramic coatings for biomedical applications, as the surface may become more inert in nature for the biological reactions and potentially increase the lifespan of the implants and minimize the side effects on the patients. Hence this study is focused on the tribocorrosion behavior of the ceramic coatings for the hip implant application on commonly used implant titanium alloy. The three types of the ceramic coatings are conventional monolithic micron alumina (IDA), micron alumina-40 wt % yttria-stabilized zirconia (YSZ) composite coating (IDAZ), and by-layer nanostructured alumina-13 wt % titania/YSZ (IDZAT) on Ti-6Al-4V alloy. A series of tests, under free potential and potentiostatic mode, were conducted using a hip simulator tribocorrosion setup under simulated joint fluid (bovine calf serum with protein concentration 30g/L). The tribological conditions are pin-on-ball contact with a load of 16N (approximately contact pressure of 50 MPa), the frequency of 1 Hz (walking frequency), and with an amplitude of 30°. The tribocorrosion studies clearly revealed that the coatings have better wear and corrosion resistance and the predominant damage mechanism was mechanical wear rather than corrosion. Among the coatings, the IDZAT shows enhanced tribocorrosion performance by exhibiting more positive OCP, no induced current, and a lower coefficient of friction.
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Affiliation(s)
- Kai-Yuan Cheng
- Department of Material Science and Civil Engineering, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Vasanth Gopal
- Department of Physics, School of Advanced Sciences, VIT, Vellore 632014, India.,Centre for Biomaterials, Cellular, and Molecular Theranostics, VIT, Vellore, 632014, India
| | - Michael McNallan
- Department of Material Science and Civil Engineering, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Geetha Manivasagam
- Centre for Biomaterials, Cellular, and Molecular Theranostics, VIT, Vellore, 632014, India
| | - Mathew T Mathew
- Department of Biomedical Sciences, College of Medicine at Rockford, University of Illinois-School of Medicine at Rockford, Rockford, Illinois 61107-1897, United States
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45
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Self-organized TiO2 nanotube layer on Ti–Nb–Zr alloys: growth, characterization, and effect on corrosion behavior. J APPL ELECTROCHEM 2019. [DOI: 10.1007/s10800-019-01345-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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46
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Solomon MM, Umoren SA, Quraishi MA, Salman M. Myristic acid based imidazoline derivative as effective corrosion inhibitor for steel in 15% HCl medium. J Colloid Interface Sci 2019; 551:47-60. [DOI: 10.1016/j.jcis.2019.05.004] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 04/14/2019] [Accepted: 05/01/2019] [Indexed: 10/26/2022]
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47
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Abstract
In the field of surface treatment, laser colour marking can be used to produce coloured marks on the surfaces of metals. Laser colour markings can be applied to various materials, but on titanium alloys a wide spectra of vivid colours can be achieved. This study presents an analysis of the corrosion properties of laser treated surfaces that were exposed to aggressive environments. Different samples were prepared with laser light of various power intensities and processing speeds. The samples were prepared on low alloyed Ti. Electrochemical, spectroscopic and microstructural analyses were conducted in order to study the properties of the laser treated surfaces. Corrosion testing showed different effects of laser power and production speed on the properties of the laser treated surfaces. It was shown that a high intensity and slow processing rate affect the surfaces by forming oxides that are relatively stable in a corrosive environment of 0.1 M NaCl. Spectroscopic investigations including scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) analyses showed the differences in chemical structure of the surface layer formed after laser treatment. Similarly, microstructural investigations showed different effects on the surface and sub-surface layer of the laser treated samples.
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48
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Haladu SA, Umoren SA, Ali SA, Solomon MM, Mohammed ARI. Synthesis, characterization and electrochemical evaluation of anticorrosion property of a tetrapolymer for carbon steel in strong acid media. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2018.07.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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49
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Lauria I, Kutz TN, Böke F, Rütten S, Zander D, Fischer H. Influence of nanoporous titanium niobium alloy surfaces produced via hydrogen peroxide oxidative etching on the osteogenic differentiation of human mesenchymal stromal cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 98:635-648. [PMID: 30813067 DOI: 10.1016/j.msec.2019.01.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 12/20/2018] [Accepted: 01/07/2019] [Indexed: 12/21/2022]
Abstract
Titanium niobium alloys exhibit a lower stiffness compared to Ti6Al4V, the 'gold standard' for load-bearing bone implants. Thus, the critical mismatch in stiffness between the implant and adjacent bone tissue could be addressed with TiNb alloys and thereby reduce stress shielding, which can result in bone resorption and subsequent implant loosening; however, the cellular response on the specific material is crucial for sufficient osseointegration. We therefore hypothesize that the response of human mesenchymal stromal cells (hMSC) and osteoblast-like cells on Ti45Nb surfaces can be improved by a novel nanoporous surface structure. For this purpose, an etching technique using hydrogen peroxide electrolyte solution was applied to Ti45Nb. The treated surfaces were characterized using SEM, LSM, AFM, nanoindentation, and contact angle measurements. Cell culture experiments using hMCS and MG-63 were conducted. The H2O2 treatment resulted in surface nanopores, an increase in surface wettability and a reduction in surface hardness. The proliferation of MG-63 was enhanced on TiNb45 compared to Ti6Al4V. MG-63 focal adhesion complexes were detected on all Ti45Nb surfaces, whereas the nanostructures notably increased the cell area and decreased cell solidity, indicating stimulated cell spreading and pseudopodia formation. Alizarin red stainings indicated that the nanoporous surfaces stimulated the osteogenic differentiation of hMSC. It can be concluded that the proposed surface treatment could potentially help to stimulate the osseointegration behaviour of the advantageous low stiff Ti45Nb alloy.
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Affiliation(s)
- Ines Lauria
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany.
| | - Tatiana Nicole Kutz
- Chair of Corrosion and Corrosion Protection, Foundry Institute, RWTH Aachen University, Intzestrasse 5, 52072 Aachen, Germany.
| | - Frederik Böke
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany.
| | - Stephan Rütten
- Electron Microscopy Facility, Institute of Pathology, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany.
| | - Daniela Zander
- Chair of Corrosion and Corrosion Protection, Foundry Institute, RWTH Aachen University, Intzestrasse 5, 52072 Aachen, Germany.
| | - Horst Fischer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany.
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50
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Sri Maha Vishnu D, Sure J, Liu Y, Vasant Kumar R, Schwandt C. Electrochemical synthesis of porous Ti-Nb alloys for biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 96:466-478. [PMID: 30606556 DOI: 10.1016/j.msec.2018.11.025] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 10/21/2018] [Accepted: 11/21/2018] [Indexed: 12/27/2022]
Abstract
Porous titanium‑niobium alloys of composition Ti-24Nb, Ti-35Nb and Ti-42Nb were synthesised by electro-deoxidation of sintered oxide discs of mixed TiO2 and Nb2O5 powders in molten CaCl2 at 1173 K, and characterised by XRD, SEM, EDX and residual oxygen analysis. At the lower Nb content a dual-phase α/β-alloy was formed consisting of hexagonal close-packed and body-centred cubic Ti-Nb, whereas at the higher Nb contents a single-phase β-alloy was formed of body-centred cubic Ti-Nb. The corrosion behaviour of the alloys prepared was assessed in Hanks' simulated body fluid solution at 310 K over extended periods of time. Potentiodynamic polarisation studies confirmed that the alloys exhibited passivation behaviour, and impedance studies revealed that the passive films formed on the surface of the alloys comprised a bi-layered structure. XPS analysis further proved that this contained hydroxyapatite at the top and native metal oxide underneath. The mechanical properties of the alloys were evaluated, and the elastic moduli and the Vickers hardness were both found to be in the range of that of bone. Overall, Ti-35Nb is proposed to be the best-suited candidate of the materials studied in regard to biomedical applications.
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Affiliation(s)
- D Sri Maha Vishnu
- Department of Materials Science and Metallurgy, University of Nizwa, Birkat Al Mouz, 616 Nizwa, Oman; Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom.
| | - Jagadeesh Sure
- Department of Materials Science and Metallurgy, University of Nizwa, Birkat Al Mouz, 616 Nizwa, Oman; Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
| | - Yingjun Liu
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
| | - R Vasant Kumar
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
| | - Carsten Schwandt
- Department of Materials Science and Metallurgy, University of Nizwa, Birkat Al Mouz, 616 Nizwa, Oman; Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
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