Study of the corrosion behavior of titanium and some of its alloys for biomedical and dental implant applications

被引：491
|
作者：
González, JEG [1 ]
Mirza-Rosca, JC [1 ]
机构：
[1] Univ Las Palmas Gran Canaria, Dept Ingn Proc, Tafira 35017, Spain
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1999年 / 471卷 / 02期
关键词：
titanium; biomedical implant alloy; EIS; passivation;
D O I：
10.1016/S0022-0728(99)00260-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The influence of alloying elements and the potential on the corrosion resistance of Pi and other Ti-based biomedical implant alloys under simulated physiological conditions is presented. Ti and its following alloys: Ti-10Mo, Ti-10Mo-10Al, Ti-7Al-4.5V and Ti-5Al-4.5V and Ti-5Al-2.5Fe were studied. Electrochemical impedance spectroscopy was used and the experimental results were compared with those obtained by potentiostatic and potentiodynamic techniques. All the measurements were made in Ringer's solution at pH 7.8 and at different potentials (E-corr, - 650, - 500, 0, + 200 and + 400 mV vs. SCE). Under these conditions, all the Ti-based alloys exhibited spontaneous passivity. It was evident that Mo, V and Fe improved passivity and limited the active corrosion of the beta-phase of Ti while Al enrichment of the alpha-phase was found to be detrimental to the passivity and corrosion resistance of Ti. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：109 / 115
页数：7
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