Also known as black diamond or inorganic material, a black micropowder with a chemical composition of B4C is usually grayish-black. It is known to be one of three most difficult materials (after cubic boron nutride and diamond).
Boron Carbide Properties
Boron carbide doesn’t react with acids and alkali solution. Boron carbide is stable against acid, and can be found in concentrated or dilute acids or alkali water solutions.
Boron carbonide can be kept stable in an atmosphere below 800 degrees Celsius. Boron oxide is formed at higher temperatures by its oxidation. This causes it to lose its stability and then oxidize to carbon dioxide and/or boron trioxide.
Mohs hardness for boron carbonide is approximately 9.5. This is the third-hardest substance after diamonds and cubic boron nutride. However, its hardness exceeds that of silicon carbide. Boron carbide has low density, good strength and chemical stability.
Boron Carbide Products
Boron carbide has many uses, including in ceramic reinforcing phase, wear-resistant materials, and lightweight armor. Boron carbide is simple to make and inexpensive so it’s more commonly used. Boron carbide is a good substitute for expensive diamond.
Control nuclear fission
Boron carbide absorbs a lot of neutrons but does not produce radioactive isotopes. This makes it an ideal neutron absorber in nuclear power stations. Also, the neutron absorber controls nuclear fission’s rate. Although it’s most commonly made in a controlled rod form in the nuclear reactor fields, some times it may be powdered due to its increased surface area.
Because of its high melting points, boron carbide is hard to mold into any artificial product. But, the powder can still be melted at high temperatures to create simple 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 lightweight and can resist armor-piercing projectile penetration through its hot-press coating. This makes it an integral defense protection layer.
This can be used in making gun nozzles within the munition industry. It has high wear resistance and hardness. The boron sandblasting device will eventually replace those of silicon carbide/tungsten or cemented carbide, zirconia, and silicon nitride.
Boron carbide may also be used for the production of metal borides.
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