Capillary electroosmosis properties of water lubricants with different electroosmotic additives under a steel-on-steel sliding interface  

作　　者：Bohua FENG Zhiqiang LUAN Tao ZHANG Jiawei LIU Xiaodong HU Jiju GUAN Xuefeng XU 

机构地区：[1]Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology,Ministry of Education&Zhejiang Province,Zhejiang University of Technology,Hangzhou 310023,China [2]College of Mechanical Engineering,Changshu Institute of Technology,Changshu 215500,China

出　　处：《Friction》2022年第7期1019-1034,共16页摩擦（英文版）

基　　金：The authors gratefully acknowledge the support of the National Natural Science Foundation of China(No.51775507);the Natural Science Foundation of Zhejiang Province(No.LY19E050006).

摘　　要：The process of lubricant penetration into frictional interfaces has not been fully established,hence compromising their tribological performance.In this study,the penetration characteristics of deionized water(DI water)containing an electroosmotic suppressant(cetyltrimethylammonium bromide(CTAB))and an electroosmotic promoter(sodium lauriminodipropionate(SLI)),were investigated using steel-onsteel friction pairs.The results indicated that the lubricant with electroosmotic promoter reduced the coefficient of friction and wear scar diameter,whereas that with an electroosmotic suppressant exhibited an opposite behavior compared with DI water.The addition of SLI promoted the penetration of the DI water solution,thus resulting in the formation of a thick lubricating film of iron oxide at the sliding surface.This effectively reduced the abrasion damage,leading to a lower coefficient of friction and wear loss.

关 键 词：electroosmosis friction interface electroosmotic additives water lubricants tribological performance 

分 类 号：TH117.2[机械工程—机械设计及理论]