Electrochemical stability of binary TiNb for biomedical applications
| Autor: | K M Reyes, A.P.R. Alves Claro, Neide K. Kuromoto, Cláudia Eliana Bruno Marino |
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| Přispěvatelé: | Universidade Federal do Paraná (UFPR), Universidade Estadual Paulista (Unesp) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Polymers and Plastics Biocompatibility Alloy Oxide Corrosion resistance 02 engineering and technology engineering.material 010402 general chemistry Electrochemistry 01 natural sciences Corrosion Biomaterials chemistry.chemical_compound Metals and Alloys 021001 nanoscience & nanotechnology Electrochemical stability 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Dielectric spectroscopy Hysteresis Chemical engineering chemistry engineering Ti-Nb alloys Chemical stability 0210 nano-technology |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2018-12-11T17:13:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-07-01 The Ti-Nb alloy binary system has been widely studied with regard to biomedical applications due to the high biocompatibility and excellent mechanical properties of the alloys. Regarding physicalchemical stability, Ti-Nb alloys maintain the properties of Ti metal, which is highly resistant to corrosion in aggressive media due to a spontaneous stable oxide layer (TiO2) formed on its surface. The objective of this study was to evaluate the corrosion resistance of the Ti-40Nb alloy in artificial blood. The thermodynamic stability was studied using the open circuit potential technique and the corrosion resistance was assessed by potentiodynamic measurements and electrochemical impedance spectroscopy. The electrochemical results indicated that the Ti-40Nb alloy has high corrosion resistance and good thermodynamic stability, with an OCP of around -485 mV, and the alloy remained electrochemically stable in potentiodynamic conditions with initial and final potentials of -1.0 V to +2.0 Vsce, respectively, in low current densities (∼μA cm-2) with an absence of hysteresis, aspure Ti. The results obtained showed that this specific alloy has the potential to be used in biomedical applications. Laboratory of Biomaterials and Electrochemistry Federal University of Paraná UFPR Physics Department Laboratory of Surface Mechanical Properties Federal University of Paraná UFPR UNESP School of Engineering Materials and Technology Department Guaratinguetá Campus Department of Mechanical Engineering Laboratory of Biomaterials and Electrochemistry Federal University of Paraná UFPR UNESP School of Engineering Materials and Technology Department Guaratinguetá Campus |
| Databáze: | OpenAIRE |
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