| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonmagnetic hard metal which stably acquires a saturation magnetization value of 2 nanoTm<SP>3</SP>/kg or less. SOLUTION: The nonmagnetic hard metal comprises a bonding phase containing nickel as a main component, a hard phase consisting of tungsten carbides, and a cubic compound phase comprising at least one or more of carbide, nitride and mutual solid solutions thereof of the groups IVa, Va and VIa elements in the periodic table; when defining the amount of tungsten contained in the bonding phase as "a" wt.%, the amount of chromium contained in the bonding phase as "b" wt.%, and the amount of silicon contained in the bonding phase as "c" wt.%, has values of a, b and c so as to satisfy 5≤a≤30, 5≤b≤14, 1≤c≤5, and 8≤(b+c)≤15; and thereby shows the saturation magnetization value of 2 nanoTm<SP>3</SP>/kg or less. COPYRIGHT: (C)2004,JPO
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