Cubic Boron Nitride Powder is synthesized from hexagonal boron nitride and a catalyst at high temperature and pressure. Cubic Boron Nitride Powder is another new product after the advent of synthetic diamond. Cubic boron nitride has high hardness, thermal stability and chemical inertness, as well as excellent infrared transmittance and wide band gap. The hardness of Cubic Boron Nitride Powder is second only to diamond, but the thermal stability of cubic boron nitride is much higher than that of diamond, and it has greater chemical stability to iron-based metal elements. The grinding performance of the abrasive tool prepared by Cubic Boron Nitride Powder is very good, not only can it be competent for the processing of difficult-to-grind materials, improve the productivity, but also effectively improve the grinding quality of the workpiece.
Cubic Boron Nitride Powder
Introduction
Cubic Boron Nitride Powder is synthesized from hexagonal boron nitride and a catalyst at high temperature and pressure. Cubic Boron Nitride Powder is another new product after the advent of synthetic diamond. Cubic boron nitride has high hardness, thermal stability and chemical inertness, as well as excellent infrared transmittance and wide band gap. The hardness of Cubic Boron Nitride Powder is second only to diamond, but the thermal stability of cubic boron nitride is much higher than that of diamond, and it has greater chemical stability to iron-based metal elements. The grinding performance of the abrasive tool prepared by Cubic Boron Nitride Powder is very good, not only can it be competent for the processing of difficult-to-grind materials, improve the productivity, but also effectively improve the grinding quality of the workpiece.
Table 1: Performance comparison of Cubic Boron Nitride Powder and synthetic diamond
Specifications | Cubic Boron Nitride | synthetic iamond |
Molecular formula | BN | C |
Density，1×105kg/m3 | 3.45-3.54 | 3.48-3.54 |
Hardness， HV(10N/mm2) | 8000-9000 | 10000 |
Flexural strength，GPa | 0.294 | 0.21-0.28 |
Thermal conductivity，W/(m·k) | 75.55 | 146.54 |
Thermal stability，℃（Air） | 1250-1350 | 700-800 |
with iron group elements | Chemically inert | Chemically inert (reactive) |
FIG.1 The unit cell of Cubic Boron Nitride Powder.
The crystal forms of Cubic Boron Nitride Powder include tetrahedral frustum, octahedron, distorted crystal and twin crystal.
FIG.2 Grinding wheel made of Cubic Boron Nitride Powder.
Widely used in high-efficiency and high-precision grinding of crankshafts or camshafts used in automobiles, motorcycles, diesel engines, gasoline engines, textile machinery and other industries.
FIG.3 Ceramic CBN Grinding Wheels Made of Cubic Boron Nitride Powder.
FIG.4 Abrasive tools prepared by Cubic Boron Nitride Powder.
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