電圧印加によるイオン液体の潤滑特性制御

抄録

Electric field can control adsorption structure of ionic liquids on solid surface. There are, however, few report about the relationship between frictional property and adsorption structure in macroscale under the electric field applied. In this study, the effect of the electric field on a frictional property of ionic liquids were investigated by using the custom made sliding tester. [BMIM][I] and [BMIM][FAP] were used as lubricant. In the case of applying negative voltage, both ionic liquids showed the same friction coefficient. On the other hand, in the case of applying positive voltage, [BMIM][FAP] showed higher friction coefficient than the other. It is considered that the kind of adsorption molecule affected the friction coefficient depending on the applied electric field.