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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todo:paper_09475117_v66_n10_p1140_Vera2023-10-03T15:49:23Z Corrosion resistance of titanium dioxide anodic coatings on Ti-6Al-4V Vera, M.L. Linardi, E. Lanzani, L. Mendez, C. Schvezov, C.E. Ares, A.E. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09475117_v66_n10_p1140_Vera |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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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 Vera, M.L. Linardi, E. Lanzani, L. Mendez, C. Schvezov, C.E. Ares, A.E. 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. |
| format |
JOUR |
| author |
Vera, M.L. Linardi, E. Lanzani, L. Mendez, C. Schvezov, C.E. Ares, A.E. |
| author_facet |
Vera, M.L. Linardi, E. Lanzani, L. Mendez, C. Schvezov, C.E. Ares, A.E. |
| author_sort |
Vera, M.L. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_09475117_v66_n10_p1140_Vera |
| work_keys_str_mv |
AT veraml corrosionresistanceoftitaniumdioxideanodiccoatingsonti6al4v AT linardie corrosionresistanceoftitaniumdioxideanodiccoatingsonti6al4v AT lanzanil corrosionresistanceoftitaniumdioxideanodiccoatingsonti6al4v AT mendezc corrosionresistanceoftitaniumdioxideanodiccoatingsonti6al4v AT schvezovce corrosionresistanceoftitaniumdioxideanodiccoatingsonti6al4v AT aresae corrosionresistanceoftitaniumdioxideanodiccoatingsonti6al4v |
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1807315597917159424 |