Tribological behaviour of oil-soluble organo-molybdenum compound as lubricating additives  

作　　者：SHI Pei-jing XU Bin-shi XU Yi QIAO Yu-lin LIU Qian 

机构地区：[1]National Key Laboratory for Remanufacturing,Academy of Armored Force Engineering, Beijing 100072, China

出　　处：《中国有色金属学会会刊:英文版》2004年第z1期386-390,共5页Transactions of Nonferrous Metals Society of China

基　　金：Project(50235030)supported by the National Natural Science Foundation of China; project(G1999065009)supported by the National Basic Research Program of China

摘　　要：A four-ball machine was employed to investigate the tribological performances and the synergetic function of organo-molybdenum compounds (molybdenum dialkyl-dithiophosphate and molybdenum dithiophosphate, coded as MoDDP and MoDTP, respectively) as additives in liquid paraffin. The morphologies of the worn surfaces and elemental distributions were observed and determined by means of scanning electron microscopy and energy dispersive spectrometry. The chemical states of some typical elements on the worn surface were analyzed on X-ray photoelectron spectroscope. The results show that MoDDP and MoDTP additives in liquid paraffin have excellent antiwear and friction-reduction properties, which are attributed to the reaction film composed of MoS2, FeS and MoO2, and the deposited film composed of phosphate on the worn surface. Moreover, these two additives have synergetic friction-reducing and antiwear effect, which is closely related to the chemical states of S on the worn surface.

关 键 词：oil-soluble organo-molybdenum additive friction-reduction and antiwear behaviour TRIBOCHEMISTRY 

分 类 号：TQ047.1[化学工程]