| 摘要 |
<p>A hard film and a hard film-coated material having better wear resistance and sliding performance (due to lower friction coefficients) than conventional surface coating layers, wherein the hard film includes at least one covering layer A and at least one covering layer B stacked one over the other, both having a thickness of 5 to 100 nm. The covering layer has a composition represented by the formula M(BaCbN1−a−b), where M denotes one or more elements selected from W, V, Mo, and Nb, and a and b denote the atomic ratio of B and C, respectively, as defined below. 0≰a≰0.3 . . . (1A), and 0≰b≰0.5 . . . (2A). Covering layer B has a composition represented by the formula Ti1−x−yCrxAlySiz(C1−ANA) where x, y, z, and A denote the atomic ratio of Cr, Al, Si, and N, respectively, as defined below. 0≰1−x−y≰0.5 . . . (1B), 0≰x≰0.5 . . . (2B), 0.4≰y≰0.7 . . . (3B), 0≰z≰0.15 . . . (4B), and 0.5≰A≰1 . . . (5B).</p> |
