Nanomechanical properties of surface-modified titanium alloys for biomedical applications

被引：27

作者：

Caceres, D. ^{[2
]}

Munuera, C. ^{[3
]}

Ocal, C. ^{[3
]}

Jimenez, J. A. ^{[4
]}

Gutierrez, A. ^{[5
]}

Lopez, M. F. ^{[1
]}

机构：

[1] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

[2] Univ Carlos III Madrid, Escuela Politecn Super, Dept Fis, Madrid 28911, Spain

[3] CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain

[4] CSIC, Ctr Nacl Invest Met, E-28040 Madrid, Spain

[5] Univ Autonoma Madrid, Dept Fis Aplicada, E-28049 Madrid, Spain

来源：

ACTA BIOMATERIALIA | 2008年 / 4卷 / 05期

关键词：

titanium alloys; nanoindentation; biomaterials; oxidation; hardness;

D O I：

10.1016/j.actbio.2008.04.009

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The mechanical properties of the oxide layers developed at elevated temperature on three vanadium-free titanium alloys of interest for biomedical applications were investigated by means of the nanoindentation technique. The as-received alloys (Ti-13Nb-13Zr, Ti-15Zr-4Nb and Ti-7Nb-6Al) and their oxide scales formed by reaction with air at 750 degrees C for several oxidation times were analysed comparatively. In particular, the hardness and the Young's modulus exhibit larger values for the thermally oxidized alloys than for the untreated specimens. However, the Ti-7Nb-6Al alloy shows a different tendency to that of the TiNbZr alloys, which seems to be related to a different oxide layer growth as a function of the oxidation time. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1545 / 1552

页数：8

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