Investigation of tribological characteristics of nickel alloybased solid-lubricating composites at elevated temperatures under vacuum

被引：1
|
作者：
Jinming ZHEN [1 ,2 ]
Jun CHENG [2 ]
Hui TAN [2 ]
Qichun SUN [2 ]
Shengyu ZHU [2 ]
Jun YANG [2 ]
Weimin LIU [2 ]
机构：
[1] College of Materials Science and Engineering, Liaocheng University
[2] State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences
来源：
Friction | 2021年 / 9卷 / 05期
基金：
中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
TB333 [金属－非金属复合材料];
学科分类号：
摘要：
The development of a high-performance solid-lubricating composite with excellent self-lubricity over a broad temperature range in vacuum is significant to solve the frictional problems of spatial mechanisms. In this study, the vacuum tribological behaviors of nickel-matrix/Ag/(Ca, Ba)F2/graphite(0–2 wt%) composites were studied from 25 to 800 °C. The results show that the synergistic effects of solid lubricants can significantly improve the tribological properties of the composites in vacuum, with the graphite content contributing considerably. For 2 wt% graphite, a low friction coefficient(0.14–0.25) and the lowest wear rate((0.12–4.78)×10-5mm~3·N-1·m-1) were observed in vacuum over the entire testing temperature range. Moreover, the wear mechanisms were clarified via analysis of the chemical composition and morphologies of the sliding surfaces.
引用
收藏
页码：990 / 1001
页数：12
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