NiAl Matrix High-Temperature Self-Lubricating Composite

被引：31
|
作者：
Zhu, Shengyu [1 ,2 ]
Bi, Qinling [1 ]
Wu, Hairong [1 ,2 ]
Yang, Jun [1 ]
Liu, Weimin [1 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
来源：
TRIBOLOGY LETTERS | 2011年 / 41卷 / 03期
基金：
中国国家自然科学基金;
关键词：
NiAl matrix; High temperature; Self-lubricating composite; Wear; TRIBOLOGICAL PROPERTIES; SLIDING WEAR; MECHANICAL-PROPERTIES; METALS; PM212; CR;
D O I：
10.1007/s11249-010-9727-9
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A high-temperature self-lubricating composite NiAl-Cr-Mo-CaF2 was fabricated using the powder metallurgy technique, and the tribological behavior of the composite at a wide range of temperatures (room temperature to 1000 A degrees C) was investigated. The results showed that the composite had a favorable friction coefficient of about 0.2 and an excellent wear resistance of about 1 x 10(-5) mm(3)N(-1)m(-1) at the high temperatures tested (800 and 1000 A degrees C). The excellent self-lubricating performance was attributed to the formation of the glaze film on the worn surface consisting mainly of CaCrO4 and CaMoO4 as high-temperature solid lubricants.
引用
收藏
页码：535 / 540
页数：6
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