XPS characterization of surface modified titanium alloys for use as biomaterials

被引：23
|
作者：
Lopez, M. F. [1 ]
Jimenez, J. A. [2 ]
Gutierrez, A. [3 ,4 ]
机构：
[1] CSIC, ICMM, E-28049 Madrid, Spain
[2] CSIC, CENIM, E-28040 Madrid, Spain
[3] Univ Autonoma Madrid, Dept Fis Aplicada, E-28049 Madrid, Spain
[4] Univ Autonoma Madrid, Inst Nicolas Cabrera, E-28049 Madrid, Spain
来源：
VACUUM | 2011年 / 85卷 / 12期
关键词：
Titanium alloys; Oxidation; XPS; Surface; CORROSION BEHAVIOR;
D O I：
10.1016/j.vacuum.2011.03.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Three different Ti alloys of biomedical interest have been studied by means of X-ray photoelectron spectroscopy (XPS) to determine their surface chemical composition in both as-received condition and after oxidation at 750 degrees C in air for different times. Compositions of the investigated alloys were, in wt.%, Ti-7Nb-6Al, Ti-13Nb-13Zr and Ti-15Zr-4Nb. XPS analyses showed a behaviour of the Ti-7Nb-6Al alloy different from that of the two TiNbZr alloys, evidencing the role of the chemical composition of the alloys on the oxidation mechanisms. The oxidation process generates an aluminium-oxide rich surface on the Ti-7Nb-6Al, while in the case of the TiNbZr alloys a titanium-oxide rich layer is formed. The effect of the heat treatment on the contribution of the minority elements at the surface is also discussed. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1076 / 1079
页数：4
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