Boron nitride CAS 10043-11-5
Boron nitride is a crystal composed of nitrogen atoms and boron atoms. The crystal structure is divided into hexagonal boron nitride (HBN), close-packed hexagonal boron nitride (WBN) and cubic boron nitride. The crystal structure of hexagonal boron nitride has a similar graphite layered structure, presenting a loose, lubricated, moisture-absorbing, light white powder, so it is also called "white graphite". The expansion coefficient of hexagonal boron nitride is equivalent to quartz, but the thermal conductivity is ten times that of quartz. It also has good lubricity at high temperatures and is an excellent high-temperature solid lubricant with strong neutron absorption ability, stable chemical properties, and chemical inertness to almost all molten metals. Hexagonal boron nitride is insoluble in cold water. When water is boiled, it hydrolyzes very slowly and produces a small amount of boric acid and ammonia. It does not react with weak acids and strong bases at room temperature. It is slightly soluble in hot acid and can only be decomposed by treating with molten sodium hydroxide and potassium hydroxide. It has considerable corrosion resistance to various inorganic acids, alkalis, salt solutions and organic solvents.
| Item | Result |
| Crystal | Hexagonal |
| BN (%) | 99 |
| B2O3 (%) | <0.5 |
| C (%) | <0.1 |
| Total Oxygen (%) | <0.8 |
| Si,Al, Ca (%) | <30ppm each |
| Cu, K, Fe, Na,Ni, Cr (%) | <10ppm each |
| D50 | 2-4μm |
| Crystal Size | 500nm |
| BET (m2/g) | 12-30 |
| Tap Density (g/cm3) | 0.1-0.3 |
1. Boron nitride is used to make refractory materials, furnace insulation materials, and also used in electronics, machinery, aviation and other industries
2. Boron nitride has many excellent properties and is widely used in insulators for high-voltage and high-frequency electricity and plasma arcs, coatings for automatic welding high-temperature resistant frames, materials for high-frequency induction furnaces, solid phase admixtures for semiconductors, structural materials for atomic reactors, packaging materials to prevent neutron radiation, radar transfer windows, radar antenna media and rocket engine components. Due to its excellent lubricating properties, it is used as a high-temperature lubricant and a demoulding agent for various models. Molded boron nitride can be used to make high-temperature resistant crucibles and other products. It can be used as a superhard material, suitable for geological exploration, oil drilling drill bits and high-speed cutting tools. It can also be used as a metal processing grinding material, with the characteristics of low processing surface temperature and few surface defects of components. Boron nitride can also be used as an additive for various materials. Boron nitride fiber made from boron nitride is a medium-modulus high-functional fiber. It is an inorganic synthetic engineering material that can be widely used in the chemical industry, textile industry, aerospace technology and other cutting-edge industrial sectors.
3.Release agent for metal forming and lubricant for metal wire drawing; special electrolytic and resistance materials under high temperature; solid lubricant; heat seal desiccant for transistors and additive for polymers such as plastic resins; boron nitride products pressed into various shapes can be used as high temperature, high pressure, insulation and heat dissipation components; thermal shielding materials in the aerospace industry; with the participation of catalysts, it can be converted into cubic boron nitride as hard as diamond after high temperature and high pressure treatment.
25kgs/drum or Customized according to customer requirements
Boron nitride CAS 10043-11-5
Boron nitride CAS 10043-11-5
