Tribological Properties of Ni-based High Temperature Self-Lubricating Composite

被引：0

作者：

Li Z. ^{[1
,2
]}

Zhang Y. ^{[3
]}

Zhou J. ^{[1
]}

Wang J. ^{[1
]}

Chen J. ^{[1
]}

机构：

[1] State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, Gansu

[2] University of Chinese Academy of Sciences, Beijing

[3] School of Mechanical Engineering, Chengdu Technological University, Chengdu, 611730, Sichuan

来源：

Mocaxue Xuebao/Tribology | 2018年 / 38卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Friction and wear; High temperature; Ni-based composites; Self-lubricating;

D O I：

10.16078/j.tribology.2018.02.006

中图分类号：

学科分类号：

摘要：

Ni-Mo-PbO high temperature self-lubricating composites were prepared by spark plasma sintering. Microstructure of the composites was analyzed. The friction and wear properties of the composites were investigated from room temperature to 700 ℃. The oxidation-reduction reaction between PbO and Mo occurred during the sintering process. The phase constituents of the composites consisted mainly of Ni (Mo) solution, Pb and oxides of molybdenum. The friction and wear properties of the composites were temperature-dependent. The friction coefficient firstly decreased and then increased with increasing temperature. The wear rates of the composites firstly decreased and then slightly increased with increasing temperature. The addition of PbO improved the tribological properties of the composites at high temperature. Especially at 500 ℃, the composite exhibited a low friction (0.09) and wear rate [2.8×10-6 mm3/(N•m)]. The improved tribological properties of the composites at 500 ℃ were attributed to the formation of a dense and lubricious film which consisted mainly of PbO, small amount of NiO and molybdate. © 2018, Science Press. All right reserved.

引用

页码：161 / 169

页数：8

共 17 条

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