Study on the tribological properties of surfactant-modified MoS2 micrometer spheres as an additive in liquid paraffin

被引：53

作者：

Zhou, Xiaodong

Wu, Danmei

Shi, Huaqiang

Fu, Xun ^{[1
]}

Hu, Zhengshui

Wang, Xiaobo

Yan, Fengyuan

机构：

[1] Qingdao Univ Sci & Technol, Qingdao 266042, Peoples R China

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

来源：

TRIBOLOGY INTERNATIONAL | 2007年 / 40卷 / 05期

关键词：

surfactant-modified MoS2 micrometer spheres; liquid paraffin; tribological properties; lubricating film;

D O I：

10.1016/j.triboint.2006.09.002

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Tribological properties of MoS2 micrometer spheres modified by self-prepared surfactant as an additive in liquid paraffin (LP) are studied and compared with those of the commercial colloidal MoS2 on a four-ball tester and an Optiniol SRV oscillating friction and wear tester. The worn surfaces are examined with SEM and XPS2 respectively. Results show that MoS2 micrometer sphere is a much better extreme-pressure additive and anti-wear and friction-reducing additive in LP than the commercial colloidal MoS2. The boundary lubrication mechanism can be deduced as an effective chemical adsorption protective film formed by the long chain alkyl and active elements (S and N) in the prepared surfactant and tribocheinical reaction film composed of the tribochemical reaction products of the additive. Moreover, sliding and rolling frictions exist simultaneously in the MoS2 micrometer spheres/LP lubricating system, which also do more contributions to the good tribological properties. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：863 / 868

页数：6

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