Also known as black diamond or organic matter, boron carbide is an organic compound with a molecular structure of B4C. It is usually gray-black micropowder. Boron carbide is among the three most hard substances known.
Property of Boron Carbide
Boron carbide doesn’t react with acids and alkali solution. This is one the most stable acidic substances and it is stable in concentrated acidic or alkali acid aqueous solutions. Boron carbonide can be kept at a temperature of 800 degrees Celsius in the air.
While boron carbide has a lower hardness than the industrial diamond, it is more durable than silicon carbide. Boron carbide, when compared to most pottery is much less fragile. Boron carbide exhibits strong chemical resistance. It dissolves in molten alkali, but is not soluble in acid or water.
Control nuclear fission
Boron carbide absorbs a lot of neutrons but does not produce radioactive isotopes. This makes it an ideal neutron absorber for nuclear power stations. Also, the neutron absorber is responsible for controlling the rate at which nuclear fission takes place. Although it’s primarily made into a rod for control in the nuclear reactor fields, some people make it into powders due to its increased surface area.
Russia did not release nearly 2000 tons of boron carbide or sand during 1986’s Chernobyl nuclear incident. The drop eventually stopped the chain reaction.
For a long period, boron carbide was used as an abrasive medium. Due to its high melting points, it’s not possible for it to be used in artificial products. But, the powder can still be melted at high temperatures and processed into simpler shapes. This is useful for polishing and drilling hard materials, such as gemstones and cemented caride.
Boron carbide can be used to coat warships or helicopters with ceramics. Boron carbide is very light and can resist armor-piercing bullets. It forms an integral defense coating.
This can be used in making gun nozzles within the munition industry. Boron carbide has an extremely high wear resistance and hardness.
Due to its wear resistance and hardness, the new boron caride sandblasting device will replace existing sandblasting devices such as cemented carbide/tungsten or silicon carbide, silica nitride, and zirconia.
Boron carbide may also be used for the production of metal borides.
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