Patent ID: 11958118
Assignee: KYOCERA CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. An insert comprising a cBN sintered compact comprising cBN particles and a binder phase binding the cBN particles, wherein
the cBN particles occupy 60% or more of an area in a cross section of the cBN sintered compact,
the binder phase contains Al compound particles containing at least one of AlN or Al2O3, and
according to a particle distribution of the Al compound particles in a cumulative distribution based on the number of the Al compound particles in the cross section of the cBN sintered compact,
a proportion of ones of the Al compound particles with a particle diameter of 0.3 μm or larger is 5% or more, and
a proportion of ones of the Al compound particles with a particle diameter of 0.5 μm or larger is less than 5%.