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Inorganic Chemicals Boron Nitride HBN CAS 10043-11-5 White Powder

Overview of Inorganic Chemicals Boron Nitride HBN CAS 10043-11-5 White Powder

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 its 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.
Cubic boron nitride is a superhard material second only to diamond in hardness. It was first successfully developed by R.H. Wintoff of the United States in 1957. It not only has many excellent properties of diamond, but also has higher thermal stability and chemical stability to iron group metals. It is widely used in processing ferrous metals such as hardened steel, chilled cast iron, and heat-resistant alloys.

Application of Inorganic Chemicals Boron Nitride HBN CAS 10043-11-5 White Powder

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, media for radar antennas, and components of rocket engines. Due to its excellent lubricating properties, it is used as a high-temperature lubricant and a release agent for various models. Molded boron nitride can be used to manufacture high-temperature resistant crucibles and other products. It can be used as a superhard material, suitable for drill bits and high-speed cutting tools for geological exploration and oil drilling. It can also be used as a grinding material for metal processing, 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.

Product Parameters of Inorganic Chemicals Boron Nitride HBN CAS 10043-11-5 White Powder

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