The friction and wear characteristics and lubrication mechanism of imidazole phosphate ionic liquid  

作　　者：ZHANG Lin FENG DaPeng XU Bin LIU XuQing LIU WeiMin 

机构地区：[1]State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China [2]Research Institute of Lanzhou Petrochemical Corporation,Lanzhou 730000,China [3]Graduate University of Chinese Academy of Sciences,Beijing 100039,China

出　　处：《Science China(Technological Sciences)》2009年第5期1191-1194,共4页中国科学（技术科学英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 50721062 and 20533080);the National Basic Research Program of China (973 Program) (Grant No. 2007CB607606)

摘　　要：Several imidazole phosphate ionic liquids with varying carbon chain length have been synthesized at room temperature.Corrosion characteristics and tribological properties of these synthesized ionic liquids were studied using four-ball friction and wear testing machine.Its lubrication mechanism was also investigated by means of electron microscopy and X-ray photoelectron spectroscopy.The ex-perimental results showed that no corrosion was generated when the imidazole phosphate ionic liquid was applied to steel-steel pair.Meanwhile,the imidazole phosphate showed excellent anti-wear and lubricating performances,its frictional performance was related to the polarity of ionic liquids.It is suggested that the ionic liquids react with friction surface to form a protective film of iron phosphate and result in reduction in friction and wear.Several imidazole phosphate ionic liquids with varying carbon chain length have been synthesized at room temperature. Corrosion characteristics and tribological properties of these synthesized ionic liquids were studied using four-ball friction and wear testing machine. Its lubrication mechanism was also investigated by means of electron microscopy and X-ray photoelectron spectroscopy. The experimental results showed that no corrosion was generated when the imidazole phosphate ionic liquid was applied to steel-steel pair. Meanwhile, the imidazole phosphate showed excellent anti-wear and lubricating performances, its frictional performance was related to the polarity of ionic liquids. It is suggested that the ionic liquids react with friction surface to form a protective film of iron phosphate and result in reduction in friction and wear.

关 键 词：IMIDAZOLE PHOSPHATE IONIC liquids friction and WEAR LUBRICATION mechanism 

分 类 号：TH117[机械工程—机械设计及理论]