公开(公告)号：US12104229B1

公开(公告)日：2024-10-01

申请号：US18572807

申请日：2023-05-12

申请人： Sumitomo Electric Hardmetal Corp.

发明人： Tomoyuki Ishida ,  Yuki Tanaka ,  Kazuhiro Hirose ,  Yasuki Kido

IPC分类号： C22C29/08 ,  C22C29/02 ,  C22C29/06

CPC分类号： C22C29/08 ,  C22C29/02 ,  C22C29/067

摘要： A cemented carbide is 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 and having a particle diameter D10 of 0.30 μm to 0.60 μm, a particle diameter D90 of 0.90 μm to 1.40 μm, the second hard phase contains at least one first compound selected from the group consisting of TiNbC, TiNbN, and TiNbCN, and having an average particle diameter of 0.03 μm to 0.50 μm, a content of the binder phase in the cemented carbide is 8.0 vol % to 16.0 vol %, an average particle diameter of the binder phase is 0.15 μm to 0.45, a particle diameter D95 of the binder phase is 1.5 μm or less, and a degree of dispersion of the binder phase is 0.15 to 0.25.