Patent ID: 7758974

Claim:
A sliding member lubricated with a water-base lubricant, wherein the sliding member is coated with a laminated hard film formed by alternately superposing a hard film formed of material containing a (Cr 1−x Si x )(C 1−d N d ) compound defined by (A), and a hard film formed of a material containing a (Cr 1−x Si x )(C 1−d N d ) compound defined by (B) at a stacking period in the range of 1 to 1000 nm, wherein (A) 0.45≦x≦0.98 and 0≦d≦1, (B) 0≦x≦0.45 and 0≦d≦1, and x, 1−x, d and 1−d are atomic ratios of Si, Cr, N and C, respectively.