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Lesz S, Karolus M, Gabryś A, Hrapkowicz B, Walke W, Pakieła W, Gołombek K, Popis J, Palček P. Characteristics of Mg-Based Sintered Alloy with Au Addition. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1915. [PMID: 36903032 PMCID: PMC10003831 DOI: 10.3390/ma16051915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/21/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
The magnesium-based alloys produced by mechanical alloying (MA) are characterized by specific porosity, fine-grained structure, and isotropic properties. In addition, alloys containing magnesium, zinc, calcium, and the noble element gold are biocompatible, so they can be used for biomedical implants. The paper assesses selected mechanical properties and the structure of the Mg63Zn30Ca4Au3 as a potential biodegradable biomaterial. The alloy was produced by mechanical synthesis with a milling time of 13 h, and sintered via spark-plasma sintering (SPS) carried out at a temperature of 350 °C and a compaction pressure of 50 MPa, with a holding time of 4 min and a heating rate of 50 °C∙min-1 to 300 °C and 25 °C∙min-1 from 300 to 350 °C. The article presents the results of the X-ray diffraction (XRD) method, density, scanning electron microscopy (SEM), particle size distributions, and Vickers microhardness and electrochemical properties via electrochemical impedance spectroscopy (EIS) and potentiodynamic immersion testing. The obtained results reveal the compressive strength of 216 MPa and Young's modulus of 2530 MPa. The structure comprises MgZn2 and Mg3Au phases formed during the mechanical synthesis, and Mg7Zn3 that has been formed during the sintering process. Although MgZn2 and Mg7Zn3 improve the corrosion resistance of the Mg-based alloys, it has been revealed that the double layer formed because of contact with the Ringer's solution is not an effective barrier; hence, more data and optimization are necessary.
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Affiliation(s)
- Sabina Lesz
- Department of Engineering Materials and Biomaterials, Silesian University of Technology, 18a Konarskiego Street, 44-100 Gliwice, Poland
| | - Małgorzata Karolus
- Institute of Materials Engineering, University of Silesia, 1a 75 Pulku Piechoty Street, 41-500 Chorzow, Poland
| | - Adrian Gabryś
- Department of Engineering Materials and Biomaterials, Silesian University of Technology, 18a Konarskiego Street, 44-100 Gliwice, Poland
| | - Bartłomiej Hrapkowicz
- Department of Engineering Materials and Biomaterials, Silesian University of Technology, 18a Konarskiego Street, 44-100 Gliwice, Poland
| | - Witold Walke
- Department of Biomaterials and Medical Device Engineering, Silesian University of Technology, Roosevelta 40 Street, 41-800 Zabrze, Poland
| | - Wojciech Pakieła
- Department of Engineering Materials and Biomaterials, Silesian University of Technology, 18a Konarskiego Street, 44-100 Gliwice, Poland
| | - Klaudiusz Gołombek
- Materials Research Laboratory, Silesian University of Technology, 18a Konarskiego Street, 44-100 Gliwice, Poland
| | - Julia Popis
- Department of Engineering Materials and Biomaterials, Silesian University of Technology, 18a Konarskiego Street, 44-100 Gliwice, Poland
| | - Peter Palček
- Department of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Veľký Diel, SK-010 26 Žilina, Slovakia
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Effects of Surface Pretreatment of Titanium Substrates on Properties of Electrophoretically Deposited Biopolymer Chitosan/Eudragit E 100 Coatings. COATINGS 2021. [DOI: 10.3390/coatings11091120] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The preparation of the metal surface before coating application is fundamental in determining the properties of the coatings, particularly the roughness, adhesion, and corrosion resistance. In this work, chitosan/Eudragit E 100 (chit/EE100) were fabricated by electrophoretic deposition (EPD) and both their microstructure and properties were investigated. The present research is aimed at characterizing the effects of the surface pretreatment of titanium substrate, applied deposition voltage, and time on physical, mechanical, and electrochemical properties of coatings. The coating’s microstructure, topography, thickness, wettability, adhesion, and corrosion behavior were examined. The applied process parameters influenced the morphology of the coatings, which affected their properties. Coatings with the best properties, i.e., uniformity, proper thickness and roughness, hydrophilicity, highest adhesion to the substrate, and corrosion resistance, were obtained after deposition of chit/EE100 coating on nanotubular oxide layers produced by previous electrochemical oxidation.
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Ziębowicz A, Sambok-Kiełbowicz A, Walke W, Mzyk A, Kosiel K, Kubacki J, Bączkowski B, Pawlyta M, Ziębowicz B. Evaluation of Bacterial Adhesion to the ZrO 2 Atomic Layer Deposited on the Surface of Cobalt-Chromium Dental Alloy Produced by DMLS Method. MATERIALS 2021; 14:ma14051079. [PMID: 33652601 PMCID: PMC7956347 DOI: 10.3390/ma14051079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/11/2021] [Accepted: 02/16/2021] [Indexed: 11/16/2022]
Abstract
The main purpose of the research was to analyze the influence of surface modification of the cobalt-based alloy used in dental prosthetics by applying zirconium oxide (ZrO2) layers using the ALD (Atomic Layer Deposition) method. The samples were made using the DMLS (Direct Metal Laser Sintering) technique, and their surfaces were prepared in accordance with the principles of removable partial dentures (RPDs). A 50 nm-thick zirconium oxide coating was applied to the prepared substrates. This paper deals with the issues of prosthetic stomatopathy, which is a complex of pathological changes occurring in approx. 40% of the Polish population using removable dentures. Often, these changes, occurring on the mucosa, are related to improper performance, allergic reactions or the multiplication of bacteria on the surface of partial dentures. An innovative method of surface modification was proposed, together with the analysis of its influence on the physicochemical properties of the alloy and the adhesion of bacteria to the surface.
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Affiliation(s)
- Anna Ziębowicz
- Department of Biomaterials and Medical Devices Engineering, Faculty of Biomedical Engineering, Silesian University of Technology, Roosevelta 40, 41-800 Zabrze, Poland; (A.Z.); (W.W.)
| | - Agata Sambok-Kiełbowicz
- Department of Biomaterials and Medical Devices Engineering, Faculty of Biomedical Engineering, Silesian University of Technology, Roosevelta 40, 41-800 Zabrze, Poland; (A.Z.); (W.W.)
- Correspondence:
| | - Witold Walke
- Department of Biomaterials and Medical Devices Engineering, Faculty of Biomedical Engineering, Silesian University of Technology, Roosevelta 40, 41-800 Zabrze, Poland; (A.Z.); (W.W.)
| | - Aldona Mzyk
- Department of Biomedical Engineering, University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AW Groningen, The Netherlands;
| | - Kamil Kosiel
- Łukasiewicz Research Network—Institute of Microelectronics and Photonics, Department of Interdisciplinary Applications of Micro- and Nanotechnology, Al. Lotników 32/46, 02-668 Warsaw, Poland;
| | - Jerzy Kubacki
- August Chełkowski Institute of Physics, Silesian Centre for Education and Interdisciplinary Research, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland;
| | - Bohdan Bączkowski
- Department of Prosthodontics, Institute of Dentistry, Medical University of Warsaw, Żwirki i Wigury 61, 02-091 Warsaw, Poland;
| | - Mirosława Pawlyta
- Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18A, 44-100 Gliwice, Poland; (M.P.); (B.Z.)
| | - Bogusław Ziębowicz
- Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18A, 44-100 Gliwice, Poland; (M.P.); (B.Z.)
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Dziubińska A, Surdacki P, Winiarski G, Bulzak T, Majerski K, Piasta M. Analysis of the New Forming Process of Medical Screws with a Cylindrical Head of 316 LVM Steel. MATERIALS 2021; 14:ma14040710. [PMID: 33546329 PMCID: PMC7913525 DOI: 10.3390/ma14040710] [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: 12/26/2020] [Revised: 01/28/2021] [Accepted: 01/29/2021] [Indexed: 11/25/2022]
Abstract
The originality of this paper lies in the presentation of a new, innovative method for manufacturing medical screws with a cylindrical head of 316 LVM. This method is unique on a global scale, and its assumptions have been granted patent protection. The paper presents selected results of theoretical and experimental research on the developed process of forming of medical screws based on new technology. In the first part of the study a review of the types of screws used in the medical industry is made and the previous methods of their manufacture are described. The second part of the paper presents the assumptions and analysis of the elaborated process of metal forming of medical screws with a cylindrical head and ring thread made of 316 LVM austenitic steel. The theoretical analysis of the new process of forming a screw selected for testing was performed on the basis of numerical simulations. The experimental verification of the proposed theoretical solutions was carried out on the basis of laboratory tests, industrial research and qualitative research. The positive results obtained from computer simulations and experiments confirmed the effectiveness of the developed technology and the validity of its use in future in industrial practice.
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Affiliation(s)
- Anna Dziubińska
- Mechanical Engineering Faculty, Lublin University of Technology, 36 Nadbystrzycka Str., 20-618 Lublin, Poland; (P.S.); (G.W.); (T.B.); (K.M.)
- Correspondence:
| | - Piotr Surdacki
- Mechanical Engineering Faculty, Lublin University of Technology, 36 Nadbystrzycka Str., 20-618 Lublin, Poland; (P.S.); (G.W.); (T.B.); (K.M.)
| | - Grzegorz Winiarski
- Mechanical Engineering Faculty, Lublin University of Technology, 36 Nadbystrzycka Str., 20-618 Lublin, Poland; (P.S.); (G.W.); (T.B.); (K.M.)
| | - Tomasz Bulzak
- Mechanical Engineering Faculty, Lublin University of Technology, 36 Nadbystrzycka Str., 20-618 Lublin, Poland; (P.S.); (G.W.); (T.B.); (K.M.)
| | - Krzysztof Majerski
- Mechanical Engineering Faculty, Lublin University of Technology, 36 Nadbystrzycka Str., 20-618 Lublin, Poland; (P.S.); (G.W.); (T.B.); (K.M.)
| | - Mariusz Piasta
- Eurowkret Production Company, 28 Żakowiecka Str., 26-600 Radom, Poland;
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Woźniak A, Walke W, Jakóbik-Kolon A, Ziębowicz B, Brytan Z, Adamiak M. The Influence of ZnO Oxide Layer on the Physicochemical Behavior of Ti6Al4V Titanium Alloy. MATERIALS 2021; 14:ma14010230. [PMID: 33466481 PMCID: PMC7796469 DOI: 10.3390/ma14010230] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/26/2020] [Accepted: 12/28/2020] [Indexed: 01/14/2023]
Abstract
Titanium and its alloys are characterized by high biocompatibility and good corrosion resistance as a result of the ability to form a TiO2 oxide layer. However, based on literature data it can be concluded that titanium degradation products, in the form of titanium particles, metal-protein groups, oxides and ions, may cause allergic, inflammatory reactions and bone resorption. The corrosion process of Ti6Al4V in the human body environment may be intensified by a decreased pH and concentration of chloride compounds. The purpose of this article was to analyze the corrosion resistance of the Ti6Al4V alloy, obtained by the selective laser melting method in a corrosion solution of neutral pH and in a solution simulating peri-implant inflammatory conditions. Additionally, the influence of zinc oxide deposited by the atomic layer deposition method on the improvement of the physicochemical behavior of the Ti6Al4V alloy was analyzed. In order to characterize the ZnO layer, tests of chemical and phase composition as well as surface morphology investigation were performed. As part of the assessment of the physicochemical properties of the uncoated samples and those with the ZnO layer, tests of wetting angle, pitting corrosion and impedance corrosion were carried out. The number of ions released after the potentiodynamic test were measured using the inductively coupled plasma atomic emission spectrometry (ICP-AES) method. It can be concluded that samples after surface modification (with the ZnO layer) were characterized by favorable physicochemical properties and had higher corrosion resistance.
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Affiliation(s)
- Anna Woźniak
- Department of Materials Engineering and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18A Street, 44-100 Gliwice, Poland; (B.Z.); (Z.B.); (M.A.)
- Correspondence: ; Tel.: +48-32-2372603
| | - Witold Walke
- Department of Biomaterials and Medical Devices Engineering, Faculty of Biomedical Engineering, Silesian University of Technology, Roosevelta 40 Street, 41-800 Zabrze, Poland;
| | - Agata Jakóbik-Kolon
- Department of Inorganic, Analytical Chemistry and Electrochemistry, Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego 6 Street, 44-100 Gliwice, Poland;
| | - Bogusław Ziębowicz
- Department of Materials Engineering and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18A Street, 44-100 Gliwice, Poland; (B.Z.); (Z.B.); (M.A.)
| | - Zbigniew Brytan
- Department of Materials Engineering and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18A Street, 44-100 Gliwice, Poland; (B.Z.); (Z.B.); (M.A.)
| | - Marcin Adamiak
- Department of Materials Engineering and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18A Street, 44-100 Gliwice, Poland; (B.Z.); (Z.B.); (M.A.)
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