| abstract |
A low-friction sliding member such as a piston, a pistonnring, a piston skirt section and a cylinder liner section of anninternal combustion engine. The low-friction sliding membernincludes a base material having a surface. A hard carbon thinnfilm is formed at at least a part of the surface of the basenmaterial. Here, a tribo-film having at least one functional groupnselected from the group consisting of ether linkage, oxido andnhydroxyl group is formed on the hard carbon thin film when thenhard carbon thin film is in slidable contact with an oppositenmember in presence of an organic oxygen-containing compound. |