Tribological Properties of Polytetrafluoroethylene, Nano-Titanium Dioxide, and Nano-Silicon Dioxide as Additives in Mixed Oil-Based Titanium Complex Grease

被引：38

作者：

Chen, Jiguo ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Mech Engn, Harbin 150001, Peoples R China

来源：

TRIBOLOGY LETTERS | 2010年 / 38卷 / 03期

关键词：

Nanoparticle; Polytetrafluoroethylene; Titanium complex grease; Antiwear ability; Load-carrying capacity; Friction; reduction property; LUBRICATING GREASE; PERFORMANCE; BEHAVIOR;

D O I：

10.1007/s11249-010-9593-5

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Eight titanium complex greases (i.e., benzoic acid/stearic acid and sebacic acid/stearic acid titanium complex greases, and greases containing PTFE, or nano-titanium dioxide, or nano-silicon dioxide) were synthesized using 3-L reaction vessel. Their physical characteristics were characterized and their tribological properties were evaluated by using a four-ball tester. Chemical compositions of the boundary films generated on worn surfaces were analyzed with the use of scanning electron microscope and X-ray photoelectron spectrometer. Results show titanium complex greases containing PTFE, or nano-titanium dioxide, or nano-silicon dioxide exhibited excellent tribological performance. The mechanism for the friction-reduction and antiwear effect of all titanium complex greases was also proposed and discussed from a tribochemistry point of view.

引用

页码：217 / 224

页数：8

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