Patent ID: 11858049
Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 5:
6. A cemented carbide composed of a first hard phase, a third hard phase and a binder phase,
wherein the first hard phase is composed of tungsten carbide particles,
the third hard phase is composed of at least one second compound selected from the group consisting of TiTaC, TiTaN and TiTaCN,
the third hard phase has an average particle diameter of no more than 0.1 μm,
the third hard phase has a dispersity of no more than 0.7,
the third hard phase has a content of no less than 0.1 vol % and no more than 15 vol %,
the binder phase contains at least one first element selected from the group consisting of iron, cobalt and nickel, and
the binder phase has a content of no less than 0.1 vol % and no more than 20 vol %.