| 摘要 |
A hard coating film excellent in wear resistance and seizure resistance for coating a forming tool of a Cr-containing iron-base alloy includes a first coating layer A of a thickness between 1 and 10 mum formed on the forming tool and a second coating layer B of a thickness between 2 and 10 mum overlying the coating layer A. The first coating layer A is a film of Cr<SUB>1-x</SUB>M<SUB>x</SUB>(B<SUB>a</SUB>C<SUB>b</SUB>N<SUB>1-a-b</SUB>) meeting conditions expressed by expressions: 0<=x<=0.7, 0<=a<=0.2 and 0<=b<=0.5, where M is at least one element among W, V, Mo, Nb, Ti and Al, x is atomic ratio of M, a is atomic ratio of B and b is atomic ratio of C, and the second coating layer B is a film of Ti<SUB>1-X-Y-Z</SUB>Cr<SUB>X</SUB>Al<SUB>Y</SUB>L<SUB>Z</SUB>(B<SUB>B</SUB>C<SUB>A</SUB>N<SUB>1-A-B</SUB>) meeting conditions expressed by expressions: 0<=1-X-Y-Z<=0.5, 0<X<=0.5, 0.4<=Y<=0.7, 0<=Z<=0.15, 0<=A<=0.5, and 0<=B<=0.2, where L is at least either of Si and Y, X is atomic ratio of Cr, Y is atomic ratio of Al, Z is atomic ratio of L, A is atomic ratio of C and B is atomic ratio of B.
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