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

Jun Cheng, Jinming Zhen, Shengyu Zhu, Jun Yang, Jiqiang Ma, Wensheng Li, Weimin Liu

科研成果: 期刊稿件文章同行评审

55 引用 (Scopus)

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 °C. In vacuum, the friction coefficients are around or below 0.20 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 mm3/Nm at room temperature and 200 °C, 10− 6 mm3/Nm between 400 and 600 °C, and 10− 5 mm3/Nm at 800 °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.

源语言英语
页(从-至)405-413
页数9
期刊Materials and Design
122
DOI
出版状态已出版 - 15 5月 2017
已对外发布

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