Tribological Properties of CaCO3 Nanoparticles as an Additive in Lithium Grease

被引：145
作者：
Ji, Xianbing [1 ,2 ]
Chen, Yinxia [1 ,2 ]
Zhao, Gaiqing [1 ]
Wang, Xiaobo [1 ]
Liu, Weimin [1 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
来源：
TRIBOLOGY LETTERS | 2011年 / 41卷 / 01期
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词：
CaCO3; nanoparticles; Lubricant additives; Nanotribology; Lithium grease; MODIFIED TIO2 NANOPARTICLE; LIQUID PARAFFIN; CU NANOPARTICLES; OLEIC-ACID; ANTIWEAR MECHANISM; ZNO NANOPARTICLES; FRICTION; OIL; PERFORMANCE; LUBRICANT;
D O I：
10.1007/s11249-010-9688-z
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
CaCO3 nanoparticles with an average size of 45 nm were synthesized via the carbonation method. The tribological properties of the CaCO3 nanoparticles as an additive in lithium grease were evaluated with a four-ball tester. The results show that these CaCO3 nanoparticles exhibit good performance in anti-wear and friction-reduction, load-carrying capacity, and extreme pressure properties. The action mechanism was estimated through analysis of the worn surface with X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM). The results indicate that a boundary film mainly composed of CaCO3, CaO, iron oxide, and other organic compounds was formed on the worn surface during the friction process.
引用
收藏
页码：113 / 119
页数：7
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