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Li S, Li H, Guo P, Li X, Yang W, Ma G, Nishimura K, Ke P, Wang A. Enhanced Long-Term Corrosion Resistance of 316L Stainless Steel by Multilayer Amorphous Carbon Coatings. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2129. [PMID: 38730935 PMCID: PMC11084866 DOI: 10.3390/ma17092129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/17/2024] [Accepted: 04/29/2024] [Indexed: 05/13/2024]
Abstract
Diamond-like carbon (DLC) coatings are effective in protecting the key components of marine equipment and can greatly improve their short-term performance (1.5~4.5 h). However, the lack of investigation into their long-term (more than 200 h) performance cannot meet the service life requirements of marine equipment. Here, three multilayered DLC coatings, namely Ti/DLC, TiCx/DLC, and Ti-TiCx/DLC, were prepared, and their long-term corrosion resistance was investigated. Results showed that the corrosion current density of all DLC coatings was reduced by 1-2 orders of magnitude compared with bare 316L stainless steel (316Lss). Moreover, under long-term (63 days) immersion in a 3.5 wt.% NaCl solution, all DLC coatings could provide excellent long-term corrosion protection for 316Lss, and Ti-TiCx/DLC depicted the best corrosion resistance; the polarization resistances remained at ~3.0 × 107 Ω·cm2 after immersion for 63 days, with more interfaces to hinder the penetration of the corrosive media. Meanwhile, during neutral salt spray (3000 h), the corrosion resistance of Ti/DLC and TiCx/DLC coatings showed a certain degree of improvement because the insoluble corrosion products at the defects blocked the subsequent corrosion. This study can provide a route to designing amorphous carbon protective coatings for long-term marine applications in different environments.
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Affiliation(s)
- Shuyu Li
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (S.L.); (H.L.); (X.L.); (W.Y.); (G.M.); (K.N.); (P.K.)
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hao Li
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (S.L.); (H.L.); (X.L.); (W.Y.); (G.M.); (K.N.); (P.K.)
| | - Peng Guo
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (S.L.); (H.L.); (X.L.); (W.Y.); (G.M.); (K.N.); (P.K.)
| | - Xiaowei Li
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (S.L.); (H.L.); (X.L.); (W.Y.); (G.M.); (K.N.); (P.K.)
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Wei Yang
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (S.L.); (H.L.); (X.L.); (W.Y.); (G.M.); (K.N.); (P.K.)
| | - Guanshui Ma
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (S.L.); (H.L.); (X.L.); (W.Y.); (G.M.); (K.N.); (P.K.)
| | - Kazuhito Nishimura
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (S.L.); (H.L.); (X.L.); (W.Y.); (G.M.); (K.N.); (P.K.)
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peiling Ke
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (S.L.); (H.L.); (X.L.); (W.Y.); (G.M.); (K.N.); (P.K.)
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Aiying Wang
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (S.L.); (H.L.); (X.L.); (W.Y.); (G.M.); (K.N.); (P.K.)
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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Grenadyorov AS, Solovyev AA, Oskomov KV, Semenov VA, Zhulkov MO, Sirota DA, Chernyavskiy AM, Karmadonova NA, Malashchenko VV, Litvinova LS, Khaziakhmatova OG, Gazatova ND, Khlusov IA. Morphofunctional reaction of leukocytes and platelets in in vitro contact with a-C:H:SiO x -coated Ti-6Al-4V substrate. J Biomed Mater Res A 2023; 111:309-321. [PMID: 36349977 DOI: 10.1002/jbm.a.37470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 07/20/2022] [Accepted: 10/31/2022] [Indexed: 11/11/2022]
Abstract
The article deals with the plasma-assisted chemical vapor deposition of 0.3-1.4 μm thick a-C:H:SiOx films in a mixture of argon and polyphenylmethylsiloxane vapor onto the Ti-6Al-4V alloy substrate, which is often used as an implant material. The a-C:H:SiOx film structure is studied by the Fourier-transform infrared and Raman spectroscopies. The pull-off adhesion test assesses the adhesive strength of a-C:H:SiOx films, and the ball-on-disk method is employed to measure their wear rate and friction coefficient. According to these studies, a-C:H:SiOx films are highly adhesive to the Ti-6Al-4V substrate, have low (0.056) friction coefficient and wear rate (9.8 × 10-8 mm3 N-1 m-1 ) in phosphate-buffered saline at 40°C. In vitro studies show neither thrombogenicity nor cytotoxicity of the a-C:H:SiOx film for the human blood mononuclear cells (hBMNCs). The in vitro contact between the hBMNC culture and a-C:H:SiOx films 0.8-1.4 μm thick deposited onto Ti-6Al-4V substrates reduces a 24-hour secretion of pro-inflammatory cytokines and chemokines IL-8, IL-17, TNFα, RANTES, and MCP-1. This reduction is more significant when the film thickness is 1.4 μm and implies its potential anti-inflammatory effect and possible application in cardiovascular surgery. The dependence is suggested for the concentration of anti-inflammatory cytokines and chemokines and the a-C:H:SiOx film thickness, which correlates with the surface wettability and electrostatic potential. The article discusses the possible applications of the anti-inflammatory effect and low thrombogenicity of a-C:H:SiOx films in cardiovascular surgery.
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Affiliation(s)
- Alexander S Grenadyorov
- Laboratory of Applied Electronics, The Institute of High Current Electronics SB RAS, Tomsk, Tomsk region, Russia
| | - Andrey A Solovyev
- Laboratory of Applied Electronics, The Institute of High Current Electronics SB RAS, Tomsk, Tomsk region, Russia
| | - Konstantin V Oskomov
- Laboratory of Applied Electronics, The Institute of High Current Electronics SB RAS, Tomsk, Tomsk region, Russia
| | - Vjacheslav A Semenov
- Laboratory of Applied Electronics, The Institute of High Current Electronics SB RAS, Tomsk, Tomsk region, Russia
| | - Maksim O Zhulkov
- Laboratory of Applied Electronics, The Institute of High Current Electronics SB RAS, Tomsk, Tomsk region, Russia.,Centre for Surgery of the Aorta, Coronary and Peripheral Arteries, E. Meshalkin National Medical Research Center of Ministry of Health of Russian Federation, Novosibirsk, Novosibirsk region, Russia
| | - Dmitriy A Sirota
- Laboratory of Applied Electronics, The Institute of High Current Electronics SB RAS, Tomsk, Tomsk region, Russia.,Centre for Surgery of the Aorta, Coronary and Peripheral Arteries, E. Meshalkin National Medical Research Center of Ministry of Health of Russian Federation, Novosibirsk, Novosibirsk region, Russia
| | - Alexander M Chernyavskiy
- Laboratory of Applied Electronics, The Institute of High Current Electronics SB RAS, Tomsk, Tomsk region, Russia.,Centre for Surgery of the Aorta, Coronary and Peripheral Arteries, E. Meshalkin National Medical Research Center of Ministry of Health of Russian Federation, Novosibirsk, Novosibirsk region, Russia
| | - Nataly A Karmadonova
- Centre for Surgery of the Aorta, Coronary and Peripheral Arteries, E. Meshalkin National Medical Research Center of Ministry of Health of Russian Federation, Novosibirsk, Novosibirsk region, Russia
| | - Vladimir V Malashchenko
- Laboratory of Applied Electronics, The Institute of High Current Electronics SB RAS, Tomsk, Tomsk region, Russia.,Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, Kaliningrad, Kaliningrad region, Russia
| | - Larisa S Litvinova
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, Kaliningrad, Kaliningrad region, Russia
| | - Olga G Khaziakhmatova
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, Kaliningrad, Kaliningrad region, Russia
| | - Natalia D Gazatova
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, Kaliningrad, Kaliningrad region, Russia
| | - Igor A Khlusov
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, Kaliningrad, Kaliningrad region, Russia.,Department of Morphology and General Pathology, Siberian State Medical University, Tomsk, Tomsk region, Russia
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Mzyk A, Imbir G, Trembecka-Wójciga K, Lackner JM, Plutecka H, Jasek-Gajda E, Kawałko J, Major R. Rolling or Two-Stage Aggregation of Platelets on the Surface of Thin Ceramic Coatings under in Vitro Simulated Blood Flow Conditions. ACS Biomater Sci Eng 2020; 6:898-911. [PMID: 33464848 DOI: 10.1021/acsbiomaterials.9b01074] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The process of modern cardiovascular device fabrication should always be associated with an investigation of how surface properties modulate its hemocompatibility through plasma protein adsorption as well as blood morphotic element activation and adhesion. In this work, a package of novel assays was used to correlate the physicochemical properties of thin ceramic coatings with hemocompatibility under dynamic conditions. Different variants of carbon-based films were prepared on polymer substrates using the magnetron sputtering method. The microstructural, mechanical, and surface physicochemical tests were performed to characterize the coatings, followed by investigation of whole human blood quality changes under blood flow conditions using the "Impact R" test, tubes' tester, and radial flow chamber assay. The applied methodology allowed us to determine that aggregate formation on hydrophobic and hydrophilic carbon-based coatings may follow one of the two different mechanisms dependent on the type and conformational changes of adsorbed blood plasma proteins.
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Affiliation(s)
- Aldona Mzyk
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Street, 30-059 Krakow, Poland
| | - Gabriela Imbir
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Street, 30-059 Krakow, Poland
| | - Klaudia Trembecka-Wójciga
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Street, 30-059 Krakow, Poland
| | - Juergen M Lackner
- Joanneum Research Forschungsges, Institute for Surface Technologies and Photonics, Functional Surfaces, 94 Leobner Street, A-8712 Niklasdorf, Austria
| | - Hanna Plutecka
- Department of Medicine, Jagiellonian University Medical College, 8 Skawinska Street, 31-066 Krakow, Poland
| | - Ewa Jasek-Gajda
- Department of Histology, Jagiellonian University Medical College, 7a Kopernika Street, 31-034 Krakow, Poland
| | - Jakub Kawałko
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - Roman Major
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Street, 30-059 Krakow, Poland
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Berni M, Lopomo N, Marchiori G, Gambardella A, Boi M, Bianchi M, Visani A, Pavan P, Russo A, Marcacci M. Tribological characterization of zirconia coatings deposited on Ti6Al4V components for orthopedic applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 62:643-55. [PMID: 26952468 DOI: 10.1016/j.msec.2016.02.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 01/15/2016] [Accepted: 02/03/2016] [Indexed: 11/17/2022]
Abstract
One of the most important issues leading to the failure of total joint arthroplasty is related to the wear of the plastic components, which are generally made of ultra high molecular weight polyethylene (UHMWPE). Therefore, the reduction of joint wear represents one of the main challenges the research in orthopedics is called to address nowadays. Surface treatments and coatings have been recognized as innovative methods to improve tribological properties, also in the orthopedic field. This work investigated the possibility to realize hard ceramic coatings on the metal component of a prosthesis, by means of Pulsed Plasma Deposition, in order to reduce friction and wear in the standard coupling against UHMWPE. Ti6Al4V substrates were coated with a 2 μm thick yttria-stabilized zirconia (YSZ) layer. The mechanical properties of the YSZ coatings were assessed by nanoindentation tests performed on flat Ti6Al4V substrates. Tribological performance was evaluated using a ball-on-disk tribometer in dry and lubricated (i.e. with fetal bovine serum) highly-stressing conditions, up to an overall distance of 10 km. Tribology was characterized in terms of coefficient of friction (CoF) and wear rate of the UHMWPE disk. After testing, specimens were analyzed through optical microscopy and SEM images, in order to check the wear degradation mechanisms. Progressive loading scratch tests were also performed in dry and wet conditions to determine the effects of the environment on the adhesion of the coating. Our results supported the beneficial effect of YSZ coating on metal components. In particular, the proposed solution significantly reduced UHMWPE wear rate and friction. At 10 km of sliding distance, a wear rate reduction of about 18% in dry configuration and of 4% in presence of serum, was obtained by the coated group compared to the uncoated group. As far as friction in dry condition is concerned, the coating allowed to maintain low CoF values until the end of the tests, with an overall difference of about 40% compared to the uncoated balls. In wet conditions, the friction values were found to be comparable between coated and uncoated materials, mainly due to a premature delamination of the coating. Scratch tests in wet showed in fact a reduction of the critical load required to a complete delamination due to a formation of blister, although no change or damage occurred at the coating during the soaking period. Although conditions of high values of contact pressure were considered, further analyses are however required to fully understand the behavior of YSZ coatings in wet environment and additional research on the deposition process will be mandatory in order to improve the coating tribological performance at long distances addressing orthopedic applications.
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Affiliation(s)
- M Berni
- Laboratorio di NanoBiotecnologie - NaBi, Istituto Ortopedico Rizzoli, via di Barbiano 1/10, Bologna, Italy.
| | - N Lopomo
- Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano 1/10, Bologna, Italy; Dipartimento di Ingegneria dell'Informazione, Università degli Studi di Brescia, via Branze 38, Brescia, Italy
| | - G Marchiori
- Laboratorio di NanoBiotecnologie - NaBi, Istituto Ortopedico Rizzoli, via di Barbiano 1/10, Bologna, Italy
| | - A Gambardella
- Laboratorio di NanoBiotecnologie - NaBi, Istituto Ortopedico Rizzoli, via di Barbiano 1/10, Bologna, Italy
| | - M Boi
- Laboratorio di NanoBiotecnologie - NaBi, Istituto Ortopedico Rizzoli, via di Barbiano 1/10, Bologna, Italy
| | - M Bianchi
- Laboratorio di NanoBiotecnologie - NaBi, Istituto Ortopedico Rizzoli, via di Barbiano 1/10, Bologna, Italy
| | - A Visani
- Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano 1/10, Bologna, Italy
| | - P Pavan
- Dipartimento di Ingegneria Industriale, Centro Interdipartimentale di Ricerca di Meccanica dei Materiali Biologici - CMMB, Università di Padova, Via F. Marzolo 9, Padova 35131, Italy
| | - A Russo
- Laboratorio di NanoBiotecnologie - NaBi, Istituto Ortopedico Rizzoli, via di Barbiano 1/10, Bologna, Italy
| | - M Marcacci
- Laboratorio di NanoBiotecnologie - NaBi, Istituto Ortopedico Rizzoli, via di Barbiano 1/10, Bologna, Italy; Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano 1/10, Bologna, Italy
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New Ti-Alloys and Surface Modifications to Improve the Mechanical Properties and the Biological Response to Orthopedic and Dental Implants: A Review. BIOMED RESEARCH INTERNATIONAL 2016; 2016:2908570. [PMID: 26885506 PMCID: PMC4738729 DOI: 10.1155/2016/2908570] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 11/30/2015] [Indexed: 12/14/2022]
Abstract
Titanium implants are widely used in the orthopedic and dentistry fields for many decades, for joint arthroplasties, spinal and maxillofacial reconstructions, and dental prostheses. However, despite the quite satisfactory survival rates failures still exist. New Ti-alloys and surface treatments have been developed, in an attempt to overcome those failures. This review provides information about new Ti-alloys that provide better mechanical properties to the implants, such as superelasticity, mechanical strength, and corrosion resistance. Furthermore, in vitro and in vivo studies, which investigate the biocompatibility and cytotoxicity of these new biomaterials, are introduced. In addition, data regarding the bioactivity of new surface treatments and surface topographies on Ti-implants is provided. The aim of this paper is to discuss the current trends, advantages, and disadvantages of new titanium-based biomaterials, fabricated to enhance the quality of life of many patients around the world.
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Adsorption of bovine serum albumin on Zr co-sputtered a-C(:H) films: Implication on wear behaviour. J Mech Behav Biomed Mater 2014; 39:316-27. [DOI: 10.1016/j.jmbbm.2014.08.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 07/30/2014] [Accepted: 08/03/2014] [Indexed: 11/21/2022]
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Metzler P, von Wilmowsky C, Stadlinger B, Zemann W, Schlegel KA, Rosiwal S, Rupprecht S. Nano-crystalline diamond-coated titanium dental implants – A histomorphometric study in adult domestic pigs. J Craniomaxillofac Surg 2013; 41:532-8. [DOI: 10.1016/j.jcms.2012.11.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2012] [Revised: 11/13/2012] [Accepted: 11/14/2012] [Indexed: 10/27/2022] Open
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Secker TJ, Hervé R, Zhao Q, Borisenko KB, Abel EW, Keevil CW. Doped diamond-like carbon coatings for surgical instruments reduce protein and prion-amyloid biofouling and improve subsequent cleaning. BIOFOULING 2012; 28:563-569. [PMID: 22694725 DOI: 10.1080/08927014.2012.698387] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Doped diamond-like carbon (DLC) coatings offer potential antifouling surfaces against microbial and protein attachment. In particular, stainless steel surgical instruments are subject to tissue protein and resilient prion protein attachment, making decontamination methods used in sterile service departments ineffective, potentially increasing the risk of iatrogenic Creutzfeldt-Jakob disease during surgical procedures. This study examined the adsorption of proteins and prion-associated amyloid to doped DLC surfaces and the efficacy of commercial cleaning chemistries applied to these spiked surfaces, compared to titanium nitride coating and stainless steel. Surfaces inoculated with ME7-infected brain homogenate were visualised using SYPRO Ruby/Thioflavin T staining and modified epi-fluorescence microscopy before and after cleaning. Reduced protein and prion amyloid contamination was observed on the modified surfaces and subsequent decontamination efficacy improved. This highlights the potential for a new generation of coatings for surgical instruments to reduce the risk of iatrogenic CJD infection.
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Affiliation(s)
- T J Secker
- Environmental Healthcare Unit, Centre for Biological Sciences, University of Southampton, Southampton, SO17 1BJ, UK.
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Faghihi S, Li D, Szpunar JA. Tribocorrosion behaviour of nanostructured titanium substrates processed by high-pressure torsion. NANOTECHNOLOGY 2010; 21:485703. [PMID: 21063052 DOI: 10.1088/0957-4484/21/48/485703] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Aseptic loosening induced by wear particles from artificial bearing materials is one of the main causes of malfunctioning in total hip replacements. With the increase in young and active patients, complications in revision surgeries and immense health care costs, there is considerable interest in wear-resistant materials that can endure longer in the harsh and corrosive body environment. Here, the tribological behaviour of nanostructured titanium substrates processed by high-pressure torsion (HPT) is investigated and compared with the coarse-grained samples. The high resolution transmission electron microscopy reveals that a nanostructured sample has a grain size of 5-10 nm compared to that of ∼ 10 µm and ∼ 50 µm for untreated and annealed substrates, respectively. Dry and wet wear tests were performed using a linear reciprocating ball-on-flat tribometer. Nanostructured samples show the best dry wear resistance and the lowest wear rate in the electrolyte. There was significantly lower plastic deformation and no change in preferred orientation of nanostructured samples attributable to the wear process. Electrochemical impedance spectroscopy (EIS) shows lower corrosion resistance for nanostructured samples. However, under the action of both wear and corrosion the nanostructured samples show superior performance and that makes them an attractive candidate for applications in which wear and corrosion act simultaneously.
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Affiliation(s)
- S Faghihi
- Tissue Engineering and Biomaterials Division, National Institute of Genetic Engineering and Biotechnology (NIGEB), Room 117, Shahrak-e Pajoohesh, km 15, Tehran-Karaj Highway, Tehran, PO Box 14965/161, Iran.
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Yi JW, Moon MW, Ahmed SF, Kim H, Cha TG, Kim HY, Kim SS, Lee KR. Long-lasting hydrophilicity on nanostructured Si-incorporated diamond-like carbon films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:17203-17209. [PMID: 20923155 DOI: 10.1021/la103221m] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We investigated the long-lasting hydrophilic behavior of a Si-incorporated diamond-like carbon (Si-DLC) film by varying the Si fraction in DLC matrix through oxygen and nitrogen plasma surface treatments. The wetting behavior of the water droplets on the pure DLC and Si-DLC with the nitrogen or oxygen plasma treatment revealed that the Si element in the oxygen-plasma-treated Si-DLC films played a major role in maintaining a hydrophilic wetting angle of <10° for 20 days in ambient air. The nanostructured patterns with a roughness of ∼10 nm evolved because of the selective etching of the carbon matrix by the oxygen plasma in the Si-DLC film, where the chemical component of the Si-Ox bond was enriched on the top of the nanopatterns and remained for over 20 days.
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Affiliation(s)
- Jin Woo Yi
- Interdisciplinary and Fusion Technology Division, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 136-791, Republic of Korea
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