Effect of replacement of V by Nb and Fe on the electrochemical and corrosion behavior of Ti-6Al-4V in simulated physiological environment

被引:103
作者
Choubey, A [1 ]
Balasubramaniam, R [1 ]
Basu, B [1 ]
机构
[1] Indian Inst Technol, Dept Met & Mat Engn, Kanpur 208016, Uttar Pradesh, India
关键词
titanium alloys; Ti-6Al-4V; simulated body fluid; polarization; corrosion rate;
D O I
10.1016/j.jallcom.2004.03.096
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 [物理化学]; 081704 [应用化学];
摘要
The electrochemical and corrosion behavior of Ti-6Al-4V, Ti-6Al-4Nb, Ti-6Al-4Fe and Ti-5Al-2.5Fe alloys has been evaluated in Hank's solution at 37degreesC. The effect of substituting vanadium in Ti-6Al-4V alloy has been specifically addressed. The corrosion rates were estimated by the Tafel extrapolation method. All the alloys were found to be passivated immediately on immersion. The passivation properties were comparable for the alloys. The estimated corrosion rates of the alloys were also comparable. The microstructures of the alloy have been discussed. The electrochemical and corrosion behavior of Ti-6Al-4V is not affected significantly on substituting vanadium with niobium and iron. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:288 / 294
页数:7
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