| abstract |
The present invention provides a hard coating for a cutting tool that is capable of high-speed and high-efficiency cutting and has higher wear resistance than TiAlSiN, and a useful manufacturing method for obtaining such a hard coating. A (Ti 1-a-b- c-d, Al a, Cr b, Si c, B d) a (C 1-e N e) hard film consisting of, Al, Cr, Si, The atomic ratios a, b, c, and d of B are 0.5 ≦ a ≦ 0.8, 0.06 ≦ b, 0 ≦ c ≦ 0.1, 0 ≦ d ≦ 0.1, 0.01 ≦ c + d ≦ 0.1 and a + b + c + d <1 are satisfied, and the atomic ratio e of N satisfies 0.5 ≦ e ≦ 1. [Selection figure] None |