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New Titanium Alloys, Promising Materials for Medical Devices

Titanium alloys are used in medical devices due to their mechanical properties, but also for their corrosion resistance. The natural passivation of titanium-based biomaterials, on the surface of which a dense and coherent film of nanometric thickness is formed, composed mainly of TiO(2), determines...

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Autores principales: Baltatu, Madalina Simona, Vizureanu, Petrica, Sandu, Andrei Victor, Florido-Suarez, Nestor, Saceleanu, Mircea Vicentiu, Mirza-Rosca, Julia Claudia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8536995/
https://www.ncbi.nlm.nih.gov/pubmed/34683526
http://dx.doi.org/10.3390/ma14205934
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author Baltatu, Madalina Simona
Vizureanu, Petrica
Sandu, Andrei Victor
Florido-Suarez, Nestor
Saceleanu, Mircea Vicentiu
Mirza-Rosca, Julia Claudia
author_facet Baltatu, Madalina Simona
Vizureanu, Petrica
Sandu, Andrei Victor
Florido-Suarez, Nestor
Saceleanu, Mircea Vicentiu
Mirza-Rosca, Julia Claudia
author_sort Baltatu, Madalina Simona
collection PubMed
description Titanium alloys are used in medical devices due to their mechanical properties, but also for their corrosion resistance. The natural passivation of titanium-based biomaterials, on the surface of which a dense and coherent film of nanometric thickness is formed, composed mainly of TiO(2), determines an apparent bioactivity of them. In this paper, the method of obtaining new Ti20MoxSi alloys (x = 0.0, 0.5, 0.75, and 1.0) is presented, their microstructure is analyzed, and their electrochemical responses in Ringer´s solution were systematically investigated by linear polarization, cyclic potential dynamic polarization, and electrochemical impedance spectroscopy (EIS). The alloys corrosion resistance is high, and no evidence of localized breakdown of the passive layer was observed. There is no regularity determined by the composition of the alloys, in terms of corrosion resistance, but it seems that the most resistant is Ti20Mo1.0Si.
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spelling pubmed-85369952021-10-24 New Titanium Alloys, Promising Materials for Medical Devices Baltatu, Madalina Simona Vizureanu, Petrica Sandu, Andrei Victor Florido-Suarez, Nestor Saceleanu, Mircea Vicentiu Mirza-Rosca, Julia Claudia Materials (Basel) Article Titanium alloys are used in medical devices due to their mechanical properties, but also for their corrosion resistance. The natural passivation of titanium-based biomaterials, on the surface of which a dense and coherent film of nanometric thickness is formed, composed mainly of TiO(2), determines an apparent bioactivity of them. In this paper, the method of obtaining new Ti20MoxSi alloys (x = 0.0, 0.5, 0.75, and 1.0) is presented, their microstructure is analyzed, and their electrochemical responses in Ringer´s solution were systematically investigated by linear polarization, cyclic potential dynamic polarization, and electrochemical impedance spectroscopy (EIS). The alloys corrosion resistance is high, and no evidence of localized breakdown of the passive layer was observed. There is no regularity determined by the composition of the alloys, in terms of corrosion resistance, but it seems that the most resistant is Ti20Mo1.0Si. MDPI 2021-10-09 /pmc/articles/PMC8536995/ /pubmed/34683526 http://dx.doi.org/10.3390/ma14205934 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Baltatu, Madalina Simona
Vizureanu, Petrica
Sandu, Andrei Victor
Florido-Suarez, Nestor
Saceleanu, Mircea Vicentiu
Mirza-Rosca, Julia Claudia
New Titanium Alloys, Promising Materials for Medical Devices
title New Titanium Alloys, Promising Materials for Medical Devices
title_full New Titanium Alloys, Promising Materials for Medical Devices
title_fullStr New Titanium Alloys, Promising Materials for Medical Devices
title_full_unstemmed New Titanium Alloys, Promising Materials for Medical Devices
title_short New Titanium Alloys, Promising Materials for Medical Devices
title_sort new titanium alloys, promising materials for medical devices
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8536995/
https://www.ncbi.nlm.nih.gov/pubmed/34683526
http://dx.doi.org/10.3390/ma14205934
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