| 摘要 |
With the objective of providing a cubic boron nitride sintered body having superior wear resistance and defect resistance, the present invention provides a cubic boron nitride sintered body characterized by: being configured from 85-95 vol% of cubic boron nitride and 5-15 vol% of a binder phase and unavoidable impurities; the binder phase comprising at least three compounds selected from the group consisting of a carbide, nitride, carbonitride, oxide, and mutual solid solution thereof of an element selected from the group consisting of Al, V, Cr, Mn, Co, Ni, Nb, and Mo; the amount of the element aluminum contained in the cubic boron nitride sintered body being 0.5-5 mass% of the total mass of the cubic boron nitride sintered body; and the binder phase not containing elemental metal or alloys. |
