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The Property And Application of Boron Carbide Powder

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Update time : 2021-03-30 08:46:43
Boron carbide, also known as black diamond, is an organic substance with a molecular formula of B₄C, usually gray-black micropowder. Boron carbide is one of the three hardest materials known, and the other two are diamond and cubic boron nitride.

The Property of Boron Carbide

Boron carbide does not react with acid and alkali solutions, and has high chemical potential, neutron absorption, wear resistance and semiconductor conductivity. It is one of the most stable substances to acid and is stable in all concentrated or dilute acid or alkali aqueous solutions. Boron carbide is basically stable below 800°C in an air environment.

The hardness of boron carbide is lower than that of industrial diamond, but higher than silicon carbide. Compared with most pottery, boron carbide is less fragile. Boron carbide has strong chemical resistance and is not corroded by hot hydrogen fluoride and nitric acid. It is soluble in molten alkali and insoluble in water and acid.

 
 

The Application of Boron Carbide

Control nuclear fission
Boron carbide can absorb a large number of neutrons without forming any radioactive isotopes, so it is an ideal neutron absorber in nuclear power plants, and the neutron absorber mainly controls the rate of nuclear fission. Boron carbide is mainly made into a controllable rod in the nuclear reactor field, but sometimes it is made into a powder because of the increase in surface area.

During the Chernobyl nuclear accident in 1986, Russia dropped nearly 2,000 tons of boron carbide and sand, which eventually stopped the chain reaction in the reactor.

Abrasive material
Because boron carbide has been used as a coarse abrasive material for a long time. Because of its high melting point, it is not easy to be cast into artificial products, but it can be processed into simple shapes by smelting the powder at high temperature. Used for grinding, grinding, drilling and polishing hard materials such as cemented carbide and gemstones.

Coating paint
Boron carbide can also be used as a ceramic coating for warships and helicopters. It is light in weight and has the ability to resist the penetration of armor-piercing projectiles through the hot-press coating to form an integral defense layer.

Nozzle
It can be used to make gun nozzles in the munitions industry. Boron carbide, extremely hard and wear-resistant, does not react with acid and alkali, high/low temperature resistance, high pressure resistance, density ≥2.46g/cm3; microhardness ≥3500kgf/mm2, bending strength ≥400Mpa, melting point 2450℃.

Because the boron carbide nozzle has the above characteristics of wear resistance and high hardness, the boron carbide sandblasting nozzle will gradually replace the known sandblasting nozzles of cemented carbide/tungsten steel and silicon carbide, silicon nitride, alumina, zirconia, etc.

Other
Boron carbide is also used in the manufacture of metal borides, smelting sodium boron, boron alloys, and special welding.

Luoyang Trunnano Tech Co., Ltd (TRUNNANO) is a professional boron carbide powder with over 12 years experience in chemical products research and development. If you are looking for high quality boron carbide powder, please feel free to contact us and send an inquiry.

 
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