TitleEffect of surface electric potential on friction coefficient of ionic liquids
SourceAsiatrib-2018, pp. 303-304
AuthorS. Kawada, S. Ogawa, S. Sasaki


The controlling of lubricating performance of lubricants is very attractive method. This study investigated the effect of surface electric potential on lubricating performance of ionic liquids against tetrahedral amorphous carbon film in macro-scale friction. The friction coefficient of 1-butyl-3- methylimidazolium iodide was unchanged by the surface electric potential because this ionic liquids was difficult to move in the solution. On the other hand, the friction coefficient lubricated with 1-butyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate, and 1-butyl-3- methylimidazolium hexafluorophosphate were changed when the surface electric potential was +2.0 V. It was considered that adsorption structure of ionic liquids affected the friction coefficient. 


Asiatrib-2018, pp. 303-304