CEMENTED CARBIDE AND CUTTING TOOL
개요
발명자
Takahiro YAMAKAWA; Takato YAMANISHI; Masahito HIKIJI
IPC 분류
CPC 분류
A cemented carbide includes a first phase, a second phase, and a third phase. The first phase consists of WC particles. A content of the first phase is 65 vol % to 85 vol %. The particles have an arithmetic mean particle size a of 0.5 μm to 2.0 μm. The a and a particle size standard deviation b of the particles have a relation of Formula I. The a and a number-based 10% cumulative particle size c of the particles have a relation of Formula II. The second phase is composed of cobalt. A cobalt content in the cemented carbide is 3 mass % to 15 mass %. The third phase is composed of at least one element selected from the group consisting of titanium and the like, and at least any of carbon and nitrogen. The third phase includes no WC. A total content of titanium and the like in the cemented carbide is 2 mass % to 8 mass %.
원문 (중국어)
A cemented carbide includes a first phase, a second phase, and a third phase. The first phase consists of WC particles. A content of the first phase is 65 vol % to 85 vol %. The particles have an arithmetic mean particle size a of 0.5 μm to 2.0 μm. The a and a particle size standard deviation b of the particles have a relation of Formula I. The a and a number-based 10% cumulative particle size c of the particles have a relation of Formula II. The second phase is composed of cobalt. A cobalt content in the cemented carbide is 3 mass % to 15 mass %. The third phase is composed of at least one element selected from the group consisting of titanium and the like, and at least any of carbon and nitrogen. The third phase includes no WC. A total content of titanium and the like in the cemented carbide is 2 mass % to 8 mass %.