Abstract
Oiliness is very important characteristics to make reduction of friction and wear in mild frictional condition. Also in severe frictional conditions such as cutting or milling, it has been reported that lubricant possessing oiliness indicates large effect upon reduction of friction. However, the mechanism on lower friction can not be revealed clearly in that situation. In this study, friction and wear characteristics of aluminum alloy against steel are experimentally investigated in reciprocating friction with small amplitude under relatively severe condition. Measurements of a variation in friction coefficient with time and wear amount, and observations of wear scar are carried out for several kinds of lubricant. Measured and observed results shows that the higher the concentration of oleic acid or oleyl alcohol, the larger the wear amount but the smoother the wear surface.
