SLIDING MEMBER AND METHOD FOR MANUFACTURE THEREOF

摘要

A sliding member, characterized in that at least surface portion thereof which forms a sliding face comprises an oxygen−containing alloy (an iron alloy, aluminum alloy or a copper alloy) containing at least one metal element selected from molybdenum and tungsten in an amount of 2 to 80 wt % and oxygen in an amount of 0.5 to 15 wt %; and a method for manufacturing the sliding member which comprises subjecting an alloy powder to a thermal spraying or a sintering in an oxidizing atmosphere to thereby form the oxygen−containing alloy on the sliding face. The molybdenum or tungsten in the oxygen−containing alloy formed on the sliding face is converted to a sulfide, which functions as a solid lubricant, by the reaction with a sulfur−supplying component contained in a lubricating oil. The solid lubricant reduces the friction coefficient and the exhaustion of a sliding member, and thus allows the retention of the low frictional drag and the good resistance to seizure and wear of a sliding member over a long period of time.