Boron Nitride HBN Powder CAS 10043-11-5 | 24.82 g/mol Molecular Weight | White Graphite Alternative

Boron nitride is a crystalline compound composed of nitrogen and boron atoms, available in hexagonal (HBN), close-packed hexagonal (WBN), and cubic crystal structures. Hexagonal boron nitride features a layered graphite-like structure, presenting as a loose, lubricated, moisture-absorbing white powder often referred to as "white graphite."

This material exhibits exceptional thermal properties with a thermal expansion coefficient similar to quartz but thermal conductivity ten times higher. It maintains excellent lubricity at high temperatures, making it an outstanding high-temperature solid lubricant with strong neutron absorption capabilities and chemical inertness to nearly all molten metals.

Hexagonal boron nitride is insoluble in cold water and hydrolyzes slowly when boiled, producing minimal boric acid and ammonia. It demonstrates remarkable corrosion resistance to acids, alkalis, salt solutions, and organic solvents, reacting only with molten sodium hydroxide and potassium hydroxide.

Cubic boron nitride, developed in 1957, ranks as the second hardest material after diamond. It combines diamond's excellent properties with superior thermal stability and chemical resistance to iron group metals, making it ideal for processing hardened steel, chilled cast iron, and heat-resistant alloys.

• High-voltage and high-frequency electrical insulators and plasma arc components
• High-temperature resistant coatings for automatic welding frames
• Materials for high-frequency induction furnaces and semiconductor solid phase admixtures
• Structural and neutron radiation shielding materials for atomic reactors
• Radar transfer windows and antenna media components
• Rocket engine components and high-temperature lubricants
• Mold release agents and high-temperature crucible manufacturing
• Superhard materials for geological exploration drill bits and high-speed cutting tools
• Metal processing grinding materials with low processing temperatures
• Additives for various industrial materials and high-functional fiber production

Boron nitride fiber represents an inorganic synthetic engineering material with applications spanning chemical processing, textiles, aerospace technology, and advanced industrial sectors.