Corrosion resistance of titanium dioxide anodic coatings on Ti-6Al-4V

The Ti-6Al-4V alloy is used for biomedical implants due to its corrosion resistance and biocompatibility, associated with the spontaneous formation of TiO2 oxide. However, the native film may be flawed and after some time of implantation in the body it may release metal ions. Oxides of higher thickn...

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Detalles Bibliográficos
Autor principal:	Lanzani, Liliana Alicia
Publicado:	2015
Materias:	anodic oxidation corrosion resistance Ti-6Al-4V titanium dioxide coating Aluminum Aluminum coatings Biocompatibility Coatings Corrosion Corrosion resistance Electrochemical impedance spectroscopy Metal ions Metals Oxidation Oxide minerals Oxides Protective coatings Titanium Titanium alloys Titanium dioxide Titanium oxides Biomedical implants Crystalline structure Electrochemical behaviors Electrochemical parameters Physiological solution Potentiodynamic measurement Spontaneous formation Ti-6 Al-4 V Anodic oxidation
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09475117_v66_n10_p1140_Vera http://hdl.handle.net/20.500.12110/paper_09475117_v66_n10_p1140_Vera
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09475117_v66_n10_p1140_Vera
record_format	dspace
spelling	paper:paper_09475117_v66_n10_p1140_Vera2023-06-08T15:53:54Z Corrosion resistance of titanium dioxide anodic coatings on Ti-6Al-4V Lanzani, Liliana Alicia anodic oxidation corrosion resistance Ti-6Al-4V titanium dioxide coating Aluminum Aluminum coatings Biocompatibility Coatings Corrosion Corrosion resistance Electrochemical impedance spectroscopy Metal ions Metals Oxidation Oxide minerals Oxides Protective coatings Titanium Titanium alloys Titanium dioxide Titanium oxides Biomedical implants Crystalline structure Electrochemical behaviors Electrochemical parameters Physiological solution Potentiodynamic measurement Spontaneous formation Ti-6 Al-4 V Anodic oxidation The Ti-6Al-4V alloy is used for biomedical implants due to its corrosion resistance and biocompatibility, associated with the spontaneous formation of TiO2 oxide. However, the native film may be flawed and after some time of implantation in the body it may release metal ions. Oxides of higher thickness than naturally grown can be produced by anodic oxidation. The objective of this study was to evaluate the corrosion resistance of anodic TiO2 coatings, evaluating the influence of the thickness and crystalline structure of the coatings. Amorphous coatings were obtained from 27 to 140 nm that crystallized in anatase and rutile phases by heat treatment. The corrosion resistance was evaluated by potentiodynamic measurements in 0.9% sodium chloride, which is the main component of physiological solution. Evaluation of the electrochemical parameters showed that anodic coatings are more efficient barrier than the natural TiO2 oxide. As the oxidation processes influenced the electrochemical properties of metals by altering the resistance to corrosion, therefore they become important to study the electrochemical behavior of the oxides by electrochemical impedance spectroscopy. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Fil:Lanzani, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09475117_v66_n10_p1140_Vera http://hdl.handle.net/20.500.12110/paper_09475117_v66_n10_p1140_Vera
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	anodic oxidation corrosion resistance Ti-6Al-4V titanium dioxide coating Aluminum Aluminum coatings Biocompatibility Coatings Corrosion Corrosion resistance Electrochemical impedance spectroscopy Metal ions Metals Oxidation Oxide minerals Oxides Protective coatings Titanium Titanium alloys Titanium dioxide Titanium oxides Biomedical implants Crystalline structure Electrochemical behaviors Electrochemical parameters Physiological solution Potentiodynamic measurement Spontaneous formation Ti-6 Al-4 V Anodic oxidation
spellingShingle	anodic oxidation corrosion resistance Ti-6Al-4V titanium dioxide coating Aluminum Aluminum coatings Biocompatibility Coatings Corrosion Corrosion resistance Electrochemical impedance spectroscopy Metal ions Metals Oxidation Oxide minerals Oxides Protective coatings Titanium Titanium alloys Titanium dioxide Titanium oxides Biomedical implants Crystalline structure Electrochemical behaviors Electrochemical parameters Physiological solution Potentiodynamic measurement Spontaneous formation Ti-6 Al-4 V Anodic oxidation Lanzani, Liliana Alicia Corrosion resistance of titanium dioxide anodic coatings on Ti-6Al-4V
topic_facet	anodic oxidation corrosion resistance Ti-6Al-4V titanium dioxide coating Aluminum Aluminum coatings Biocompatibility Coatings Corrosion Corrosion resistance Electrochemical impedance spectroscopy Metal ions Metals Oxidation Oxide minerals Oxides Protective coatings Titanium Titanium alloys Titanium dioxide Titanium oxides Biomedical implants Crystalline structure Electrochemical behaviors Electrochemical parameters Physiological solution Potentiodynamic measurement Spontaneous formation Ti-6 Al-4 V Anodic oxidation
description	The Ti-6Al-4V alloy is used for biomedical implants due to its corrosion resistance and biocompatibility, associated with the spontaneous formation of TiO2 oxide. However, the native film may be flawed and after some time of implantation in the body it may release metal ions. Oxides of higher thickness than naturally grown can be produced by anodic oxidation. The objective of this study was to evaluate the corrosion resistance of anodic TiO2 coatings, evaluating the influence of the thickness and crystalline structure of the coatings. Amorphous coatings were obtained from 27 to 140 nm that crystallized in anatase and rutile phases by heat treatment. The corrosion resistance was evaluated by potentiodynamic measurements in 0.9% sodium chloride, which is the main component of physiological solution. Evaluation of the electrochemical parameters showed that anodic coatings are more efficient barrier than the natural TiO2 oxide. As the oxidation processes influenced the electrochemical properties of metals by altering the resistance to corrosion, therefore they become important to study the electrochemical behavior of the oxides by electrochemical impedance spectroscopy. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
author	Lanzani, Liliana Alicia
author_facet	Lanzani, Liliana Alicia
author_sort	Lanzani, Liliana Alicia
title	Corrosion resistance of titanium dioxide anodic coatings on Ti-6Al-4V
title_short	Corrosion resistance of titanium dioxide anodic coatings on Ti-6Al-4V
title_full	Corrosion resistance of titanium dioxide anodic coatings on Ti-6Al-4V
title_fullStr	Corrosion resistance of titanium dioxide anodic coatings on Ti-6Al-4V
title_full_unstemmed	Corrosion resistance of titanium dioxide anodic coatings on Ti-6Al-4V
title_sort	corrosion resistance of titanium dioxide anodic coatings on ti-6al-4v
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09475117_v66_n10_p1140_Vera http://hdl.handle.net/20.500.12110/paper_09475117_v66_n10_p1140_Vera
work_keys_str_mv	AT lanzanililianaalicia corrosionresistanceoftitaniumdioxideanodiccoatingsonti6al4v
_version_	1768542323568803840

Corrosion resistance of titanium dioxide anodic coatings on Ti-6Al-4V

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