Wide application of white graphene - raw material for the synthesis of cubic boron nitride

Hexagonal boron nitride is one of the raw materials for the production of cubic boron nitride. In the range of pressure of 3000-8000 MPa and temperature of 800-1900 degree , the reaction of hexagonal boron nitride and catalyst under high temperature and high pressure can be converted into cubic nitride. Boron single crystal.

The cubic boron nitride is a superhard inorganic material artificially synthesized after artificial diamond. Its hardness is second only to that of diamond. The cubic boron nitride has better thermal stability than diamond and chemical inertness to iron group metals. It is suitable for For machining both hard and tough materials. The use of cubic boron nitride for machining can not only improve the productivity, strictly control the shape and dimensional accuracy of the workpiece, but also effectively improve the grinding quality of the workpiece and significantly improve the surface integrity of the workpiece after grinding. At present, cubic boron nitride abrasive tools and blades are widely used in various fields such as geological exploration, oil drilling, stone, machinery, automobile and national defense industry.