Electrochemical behavior of Ti-Mo alloys applied as biomaterial

被引：130

作者：

Oliveira, N. T. C. ^{[1
]}

Guastaldi, A. C. ^{[1
]}

机构：

[1] Univ Estadual Paulista, Grp Biomat, Dept Quim Fis, Inst Quim, BR-14081970 Araraquara, SP, Brazil

来源：

CORROSION SCIENCE | 2008年 / 50卷 / 04期

基金：

巴西圣保罗研究基金会;

关键词：

titanium alloys; cyclic voltammetry; passivation; anodic films; pitting corrosion;

D O I：

10.1016/j.corsci.2007.09.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electrochemical investigation on the as-cast Ti-Mo alloys (4-20 Mo wt.%) applied as biomaterials in Na2SO4 and Ringer physiological solutions is reported. Analyses of the open-circuit potential indicated that all alloys present spontaneous passivation. SEM and cyclic voltammograms obtained in the Ringer solution showed that the samples studied do not present pitting corrosion at potentials up to 8 V (SCE), indicating high corrosion resistance. Open-circuit potential profiles of the anodic oxides growth in both solutions show that the presence of chloride ions during the anodization does not influence the oxides' chemical stability, and also clearly indicate that adding Mo to pure Ti improves the stability of the anodic oxides. All these results suggest Ti-Mo alloys promissory to be applied as biomaterials. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：938 / 945

页数：8

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