Wear characteristics of ion-nitrided Ti50Ni50 shape memory alloys

被引：48

作者：

Lin, HC

Liao, HM

He, JL

Lin, KM

Chen, KC

机构：

[1] Department of Materials Science, Feng Chia University

来源：

SURFACE & COATINGS TECHNOLOGY | 1997年 / 92卷 / 03期

关键词：

wear characteristics; ion nitriding; Ti50Ni50 shape memory alloy;

D O I：

10.1016/S0257-8972(97)00105-9

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The wear characteristics of Ti50Ni50 shape memory alloy can be improved by ion nitriding. Both TiN and Ti2Ni compound layers are produced by 700-800 degrees C ion nitriding. The thickness of TiN/Ti2Ni compound layers and the specimen's surface hardness increase with increasing nitriding temperature. Main adhesive and minor abrasive wear mechanisms are observed for the TiN/Ti2Ni compound layers against a Cr-steel ball. The friction coefficient and weight loss of 700-800 degrees C nitrided Ti50Ni50 alloy are quite low before the TiN/Ti2Ni compound layers have been worn out. The thicker TiN/Ti2Ni compound layers can sustain higher wear loads and hence have better wear resistance. The mass transfer from TiNi martensite to Cr-steel ball and from Cr-steel ball to TiN/Ti2Ni compound layers occurs because of their significant difference in hardness. (C) 1997 Published by Elsevier Science S.A.

引用

页码：178 / 189

页数：12

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