| CPC C22C 29/08 (2013.01) [C22C 29/02 (2013.01); C22C 29/067 (2013.01)] | 4 Claims |
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1. A cemented carbide composed of a first hard phase, a second hard phase and a binder phase, wherein
the first hard phase is composed of tungsten carbide particles,
a cumulative 10% particle diameter D10 of the first hard phase on an area basis is 0.30 μm or more and 0.60 μm or less,
a cumulative 90% particle diameter D90 of the first hard phase on an area basis is 0.90 μm or more and 1.40 μm or less,
the second hard phase contains at least one first compound selected from the group consisting of TiNbC, TiNbN, and TiNbCN,
a content of the second hard phase in the cemented carbide is 0.10 vol % or more and 0.50 vol % or less,
an average particle diameter of the second hard phase is 0.03 μm or more and 0.50 μm or less,
the binder phase contains cobalt at 80 mass % or more,
a content of the binder phase in the cemented carbide is 8.0 vol % or more and 16.0 vol % or less,
an average particle diameter of the binder phase is 0.15 μm or more and 0.45 μm or less,
a cumulative 95% particle diameter D95 of the binder phase on an area basis is 1.5 μm or less, and
a degree of dispersion of the binder phase is 0.15 or more and 0.25 or less.
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