| 摘要 |
This invention relates to a hard alloy consisting of a metallic phase and a hard phase having a B1 type crystal structure, and being represented by the following general formula, (M1a, M2b, M3c)(C1-x-yNyOx)z in which M1 is at least one of Group IVa elements, M2 is at least one of Group VIa elements, M3 is at least one of Group Va elements, C is carbon, N is nitrogen, O is oxygen, a, b, c, x and y are respectively atomic ratios satisfying the relations of a+b+c=1, 0.1</=(a+c)/a+b+c)</=0.7 (c can be zero), 0.05</=x</=0.5, 0</=y</=0.5, 0.05</=x+y</=0.6 and z is an atomic ratio of (C+N+O)/M1+M2+M3) satisfying the relation of 0.1</=z</=0.5. |
