| 摘要 |
A cermet contains hard phase particles containing Ti and a binding phase containing at least one of Ni and Co. 70% or more of the hard phase particles have a cored structure containing a core and a peripheral portion around the core. The core is composed mainly of at least one of Ti carbide, Ti nitride, and Ti carbonitride. The peripheral portion is composed mainly of a Ti composite compound containing Ti and at least one selected from W, Mo, Ta, Nb, and Cr. The core has an average particle size ±, the peripheral portion has an average particle size ², and ± and ² satisfy 1.1 ‰¤ ²/± ‰¤ 1.7. The hard phase particles in the cermet have an average particle size of more than 1.0 µm. |
