摺動部の通電による脂環式カルボン酸減摩効果の向上

抄録

The reduction of friction and wear in sliding parts is an eternal topic in tribology. Among the various additives tried, alicyclic carboxylic acid has attracted attention because it has shown the effect of oiliness and low friction coefficient due to the formation of graphite. In this study, we investigated the possibility of promoting the in-situ formation of graphite derived from alicyclic carboxylic acid by applying an electric current to the sliding surface in order to achieve a further low friction effect. The experiments were conducted on a reciprocating friction tester. The friction coefficient decreased with increasing the current value. When cyclopentanecarboxylic acid (CpT) and cyclopropanecarboxylic acid (CpCAc) were compared, cyclopropanecarboxylic acid (CpCAc) showed a larger decrease in the friction coefficient. This may be due to the difference in the amount of graphite produced. Since cyclopropanecarboxylic acid (CpCAc) has a three-membered ring and is energetically unstable, it is thought that the decomposition of cyclopropanecarboxylic acid (CpCAc) is accelerated by electric current and friction, resulting in the formation of more graphite.