Friction and wear behavior of Ni-based solid-lubricating composites at high temperature in a vacuum environment

被引：53

作者：

Cheng, Jun ^{[1
]}

Zhen, Jinming ^{[1
]}

Zhu, Shengyu ^{[1
]}

Yang, Jun ^{[1
]}

Ma, Jiqiang ^{[2
]}

Li, Wensheng ^{[2
]}

Liu, Weimin ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[2] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Mat, Lanzhou 730050, Peoples R China

来源：

MATERIALS & DESIGN | 2017年 / 122卷

基金：

中国国家自然科学基金;

关键词：

Vacuum; High temperature; Solid-lubricating; Tribological characteristics; Ni-based composite; TRIBOLOGICAL BEHAVIOR; MECHANICAL-PROPERTIES; SLIDING WEAR; COATINGS; MICROSTRUCTURE; ALLOY; NANOCOMPOSITE; METALS; SPACE;

D O I：

10.1016/j.matdes.2017.03.030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the effect of the complex condition with high temperature and vacuum on the tribological properties of NiCrMoAl-Ag-CaF2/BaF2 solid-lubricating composite has been investigated. It presents that this composite displays the excellent tribological properties in vacuum than in air from room temperature to 800 degrees C. In vacuum, the friction coefficients are around or below 020 and superior to that in air. Besides, the wear rates in vacuum are at least one order of magnitude lower than those tested in air. They can be divided into three stages with the temperature (10(-7) mm(3)/Nm at room temperature and 200 degrees C, 10(-6) mm(3)/Nm between 400 and 600 degrees C, and 10(-5) mm(3)/Nm at 800 degrees C). Also, the surface oxidation behavior and the lubrication characteristics of solid lubricants (Ag and fluorides) in vacuum are clarified and related to the tribological properties. (C) 2017 Published by Elsevier Ltd.

引用

页码：405 / 413

页数：9

共 32 条

[1] SLIDING FRICTION AND WEAR OF METALS IN VACUUM [J].