Investigation of Electrochemical Behavior of Novel Superelastic Biomedical Alloys in Simulated Physiological Media

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Abstract:

This paper focuses on study of the kinetics and the mechanism of passive film formation on novel superelastic biomedical Ti-22Nb-6Ta and Ti-21.8Nb-6Zr (at.%) alloys in simulated physiological solutions using XPS and electrochemical techniques in comparison with commercially pure titanium and Nitinol. In vitro biocompatibility study of Ti-22Nb-6Ta alloy was carried out as well. Ti-22Nb-6Ta alloy manifests a strong trend to protective passive film formation during the first stage of oxidation in simulated physiological solutions. It is shown that Ti-22Nb-6Ta and Ti-21.8Nb-6Zr electrochemical characteristics are comparable to those of titanium and Nitinol, and the alloy can be recommended for use in implantology.

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Materials Science Forum (Volumes 738-739)

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566-570

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January 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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