| CPC C22C 29/08 (2013.01) [C22C 29/067 (2013.01)] | 11 Claims |
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1. A cemented carbide comprising a plurality of tungsten carbide grains and a binder phase,
wherein the cemented carbide comprises the tungsten carbide grains and the binder phase in a total of 89% by volume or more,
the cemented carbide comprises 1.8% by volume or more and 20.0% by volume or less of the binder phase,
the binder phase contains cobalt,
the cemented carbide contains 1.0% by mass or more of cobalt, and
a percentage (Y2/Y1)×100 of a Young's modulus of the binder phase at 600° C., Y2 GPa, to a Young's modulus at 25° C., Y1 GPa, as measured by a nanoindenter method is 50% or more,
the binder phase further contains a first element,
the first element is at least one element selected from the group consisting of silicon, phosphorus, germanium, tin, ruthenium, osmium, iridium, and platinum, and
in the binder phase, a percentage {M1/(M1+M2)}×100 of a mass M1 of the first element to a sum M1+M2 of the mass M1 of the first element and a mass M2 of cobalt is 1% or more and 6% or less.
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