| 摘要 |
PURPOSE:To enhance the micro-chipping property of cubic system boron nitride particles, the joining property to other material and the sinterability by introducing a specified amount of carbon into the particles. CONSTITUTION:The titled cubic system boron nitride (cBN) particles contain 0.02-2.0wt% carbon. Hexagonal system BN and a catalytic substance are blended as principal starting materials in a blending ratio equal to that in the conventional manufacture of cBN, and a carbonaceous material is added to the blend. They are held in a high temp. and high pressure region where cBN is thermodynamically stable like the conventional method synthesize cBN particles contg. carbon. |
