Tribological behavior of NiTi alloy against 52100 steel and WC at elevated temperatures

被引：39
|
作者：
Abedini, M. [1 ]
Ghasemi, H. M. [1 ]
Ahmadabadi, M. Nili [1 ]
机构：
[1] Univ Tehran, Sch Met & Mat Engn, Tehran, Iran
来源：
MATERIALS CHARACTERIZATION | 2010年 / 61卷 / 07期
关键词：
NiTi alloy; High temperature wear; Friction; WC; Steel; SHAPE-MEMORY ALLOYS; PSEUDOELASTIC TINI ALLOY; WEAR-RESISTANT MATERIALS; MECHANISM;
D O I：
10.1016/j.matchar.2010.03.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The dry tribological behavior of a Ti-50.3 at.% Ni alloy at temperatures of 25 degrees C, 50 degrees C and 200 degrees C was studied. The wear tests were performed on a high temperature pin-on-disk tribometer using 52100 steel and tungsten carbide pins. The worn surfaces of the NiTi alloy were examined by scanning electron microscope. The results showed that in the wear tests involving steel pins, the wear rate of the NiTi decreased as the wear testing temperature was increased. However, for the NiTi/WC contact, a reverse trend was observed. There was also a large decrease in the coefficient of friction for the NiTi/steel contact with increasing wear testing temperature. The formation of compact tribological layers could be the main reason for the reduction of the wear rate and coefficient of friction of the NiTi/steel contact at higher wear testing temperatures. (C) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码：689 / 695
页数：7
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