Corrosion evaluation of Ti-48Al-2Cr-2Nb (at.%) in Ringer's solution

被引：53

作者：

Delgado-Alvarado, C. ^{[1
]}

Sundaram, P. A. ^{[1
]}

机构：

[1] Univ Puerto Rico, Dept Mech Engn, Mayaguez, PR 00680 USA

来源：

ACTA BIOMATERIALIA | 2006年 / 2卷 / 06期

关键词：

titanium alloy; oxidation; corrosion; Ringer's solution;

D O I：

10.1016/j.actbio.2006.05.012

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The corrosion behavior of Ti-48Al-2Cr-2Nb (at.%) in Ringer's solution was studied to evaluate its potential as a biocompatible material. Corrosion properties of Ti-6Al-4V were determined under the same conditions for comparison. Two electrochemical techniques, potentiodynamic anodic polarization and electrochemical impedance spectroscopy, were employed to test Ti-48Al-2Cr-2Nb and Ti-6Al-4V. Surface modifications to the samples were made by autoclaving and by oxidation in air at 500 degrees C and 800 degrees C. The results show excellent corrosion resistance for unmodified Ti-48Al-2Cr-2Nb, corroborated by the high values of polarization resistance and corrosion potential and low values of corrosion current and corrosion rate. Ti-48Al-2Cr-2Nb appears to possess corrosion characteristics similar to Ti-6Al-4V. Surface modification rendered the Ti-48Al-2Cr-2Nb material extremely corrosion resistant. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：701 / 708

页数：8

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