CUBIC BORON NITRIDE COMPLEX POLYCRYSTALLINE SUBSTANCE, METHOD FOR MANUFACTURING SAME, CUTTING TOOL, WIRE-DRAWING DIE, AND GRINDING TOOL

摘要

This cubic boron nitride complex polycrystalline substance has a granular cubic boron nitride (1) and a tabular cubic boron nitride (2). The average particle diameter of the granular cubic boron nitride (1) is 500 nm or less. The maximum value of the short side (3) of the tabular cubic boron nitride (2) is 10 nm or more and 10000 nm or less. A cubic boron nitride complex polycrystalline substance having high hardness, a method for manufacturing same, a cutting tool, a wire-drawing die, and a grinding tool can thereby be provided.