CEMENTED CARBIDE, AND COATED TOOL AND CUTTING TOOL USING SAME

WIPO Patent Application WO/2023/189127

A1

A cemented carbide according to a non-limiting aspect of the present disclosure has a hard phase containing W and C, a solid solution phase containing W, C and Ti, and a binding phase containing an iron group metal. A β-free layer composed only of WC and an iron group metal is provided on the surface of an intersecting region of the cemented carbide where a rake face and a flank face intersect with each other. The average thickness of the β-free layer of the rake face in the intersecting region is a, and the average thickness of the β-free layer of the flank face in the intersecting region is b. The relationship between a and b satisfies b