The bottom structure of cubic boron nitride complexity, for manufacturing identical method, cutting tool, wire-drawing die, grinding tool

摘要

A kind of cubic boron nitride Polycrystalline includes granular cubic boron nitride (1) and plate cubic boron nitride (2). The average grain diameter of the granular cubic boron nitride (1) is 500 nanometers or smaller. The plate cubic boron nitride (2) of maximum value short side (3) is 10 up to 10000 nanometers or smaller. Thereby, it is possible to provide a kind of cubic boron nitride Polycrystalline body to have high rigidity and manufacturing method, cutting tool, wire drawing die and grinding tool include identical.