| 摘要 |
A hard coating film to be applied to the surface of a tool, which has a composition of (Cr1-a-bAlaSib) (BxCyN1-x-y) with atomic ratios specified below. 0<a≰0.4 0.05≰b≰0.35 0.25≰1−a−b≰0.9 0≰x≰0.15 0≰y≰0.5 or a composition of (M1-a-bAlaSib) (BxCyN1-x-y) with atomic ratios specified below. 0.05≰a≰0.5 0.1<b≰0.35 0≰x≰0.15 0≰y≰0.5 where M denotes Ti and Cr. The hard coating film for cutting tools has better wear resistance than conventional ones. |
