Ni3Al matrix high temperature self-lubricating composites

被引：71
|
作者：
Zhu, Shengyu [1 ,2 ]
Bi, Qinling [1 ]
Yang, Jun [1 ]
Liu, Weimin [1 ]
Xue, Qunji [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 INTERNATIONAL | 2011年 / 44卷 / 04期
关键词：
Ni3Al matrix; Self-lubricating; High temperature; Composites; TRIBOLOGICAL PROPERTIES; WEAR BEHAVIOR; SLIDING WEAR; MECHANICAL-PROPERTIES; SOLID LUBRICANTS; MICROSTRUCTURE; COATINGS; ALLOYS; DRY; MO;
D O I：
10.1016/j.triboint.2010.11.016
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A Ni3Al matrix high temperature self-lubricating composite Ni3Al-BaF2-CaF2-Ag-Cr was fabricated by the powder metallurgy technique, and tribological behavior at a wide temperature range from room temperature to 800 degrees C was investigated. The results indicated that the composite exhibited low friction coefficients (0.30-0.36) and wear rates (0.65-2.45 x 10(-4) mm(3) N-1 m(-1)). It was found that the low friction coefficient was attributed to the synergistic effects of Ag, fluorides and chromates formed in the tribo-chemical reaction at high temperatures. The low wear rate of the composite was due to the high strength and the excellent lubricating properties. (c) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：445 / 453
页数：9
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