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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 1    February 2002

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Tribological properties of
oil-soluble samarium isooctoxyborate
HUANG Wei-jiu(黄伟九)1, LI Fen-fang(李芬芳)2, PENG Cheng-yun(彭成允)1,
LIU Dan(刘  丹)1,JIA Jin-zhou(贾进周)1,CHEN Mei-ling(陈美玲)

1.Department of Materials Science and Engineering,
Chongqing Institute of Technology,Chongqing 400050,China;
2.Department of Petroleum Applied Engineering,
Logistic Engineering College,Chongqing 400016,China

Abstract:An oil-soluble rare earth compound,samarium isooctoxyborate,was synthesized and used as an antiwear and extreme pressure additive for lubricatingoils.Its tribological performances were evaluated with a four-ball machine and a ring-on-block rig.In addition,surface analyses with Auger electron spectroscopy and Xray photoelectron spectroscopy were also conducted to study the surface film formed by the additive under boundary lubrication conditions.The test results s how that the additive exhibits good friction-reducing ability,good antiwear property and excellent extreme pressure performance.Surface analyses further disc lose the coexistence of organic film,oxidation film and permeating film on the rubbing surface,which contributed to improve the tribological properties of the base oil.

 

Key words: tribology;samarium isooctoxyborate;antiwear;friction-reducing;extreme pressure

ISSN 1672-7029
CN 43-1423/U

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