SLIDING MEMBER

摘要

Among parts for industrial machines, such as automobiles, which are required to reduce in weight to be more environmentally friendly, there are sliding members which are brought into contact with resilient plastic members such as of rubber. Disclosed is a sliding member which has improved wear resistance and corrosion resistance as well as a reduced friction coefficient against the resilient plastic member in contact therewith. The sliding member includes a base (2) of an aluminum alloy (101) with a surface covered with an oxide film (3). On top of the surface, there is formed a coat (1) which is made up of a conductive layer (4), a buffer layer (5), a graded layer (6), and a diamond-like carbon layer (7) in that order outwardly from the base (2). The diamond-like carbon layer (7) has a surface roughness (Ra) of 0.15 to 0.5µm which is determined by calculation in conformity with JIS B 0601.