中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Tribological Behavior of Amorphous and Crystalline Overbased Calcium Sulfonate as Additives in Lithium Complex Grease

文献类型:期刊论文

作者Liu DB(刘大波)1,2; Zhang M(张明)1; Zhao GQ(赵改青)1; Wang XB(王晓波)1
刊名Tribology letters
出版日期2012
卷号45期号:2页码:265-273
关键词Amorphous overbased calcium sulfonate Calcite Additive Lithium complex grease Tribological behavior
ISSN号1023-8883
通讯作者王晓波
英文摘要The aim of this study was to examine the tribological behavior of amorphous overbased calcium sulfonate (AOBCS) and crystalline overbased calcium sulfonate (COBCS, transformed from the AOBCS) as additives in lithium complex grease. The transformation product of the calcium carbonate polymorph from AOBCS was calcite, as determined by Fourier transform infrared spectroscopy. Tribological properties were evaluated by an oscillating reciprocating friction and wear tester and a four-ball tester. The results showed that the addition of COBCS can dramatically improve both the antiwear performance and the friction-reducing and load-carrying properties of the base grease. However, improvement of the tribological properties of the base grease by AOBCS was highly dependent on the concentrations added and the loads applied. The tribological properties of the base grease were improved more by the addition of COBCS than by the addition of AOBCS. X-ray photoelectron energy spectrometry and thermogravimetric analysis revealed that both AOBCS and COBCS underwent complicated tribochemical reactions in the base grease and that chemically reactive films consisting of CaCO3, CaO, iron oxide and organic compounds were formed on the worn surfaces. Taken together with the results of the tribo-tests, we suggest that transformation of the calcium carbonate polymorphs was the main factor in improving the tribological properties of lithium complex grease. The transformation of calcium carbonate polymorphs can broaden the application of AOBCS as an extreme pressure/antiwear additive in greases under boundary lubrication conditions.
学科主题材料科学与物理化学
收录类别SCI
资助信息the National 973 Program of China (Grant No. 2011CB706603)
语种英语
WOS记录号WOS:000299136400005
公开日期2013-07-12
源URL[http://210.77.64.217/handle/362003/3499]  
专题兰州化学物理研究所_固体润滑国家重点实验室
作者单位1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
推荐引用方式
GB/T 7714
Liu DB,Zhang M,Zhao GQ,et al. Tribological Behavior of Amorphous and Crystalline Overbased Calcium Sulfonate as Additives in Lithium Complex Grease[J]. Tribology letters,2012,45(2):265-273.
APA Liu DB,Zhang M,Zhao GQ,&Wang XB.(2012).Tribological Behavior of Amorphous and Crystalline Overbased Calcium Sulfonate as Additives in Lithium Complex Grease.Tribology letters,45(2),265-273.
MLA Liu DB,et al."Tribological Behavior of Amorphous and Crystalline Overbased Calcium Sulfonate as Additives in Lithium Complex Grease".Tribology letters 45.2(2012):265-273.

入库方式: OAI收割

来源:兰州化学物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。