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Boron carbide The inorganic substance B4C is commonly gray-black powder. It is one the hardest materials (after diamonds and cubic boron Nitride).

Boron Carbide Properties

Boron carbide has a very high chemical potency, neutron absorbance, wear resistance, and semiconductor conductivity. Boron carbide, one of most stable substances for acid and alkali solutions is stable at all concentrations or dilutions.
Boron carbide, in an atmosphere with low temperatures, is stable. The boron oxidation product is lost to the gas phase and leads to its instabilities and oxidation into carbon dioxide and Boron trioxide.
Its hardness is greater than that of silicon carbide. Boron carbide has low density and high strength. It also has good chemical stability, as well as high temperature stability.

Boron carbide Applications

Boron carbide has been used to make wear-resistant materials and ceramic reinforcing phases. It is also used in the manufacture of lightweight armors, reactor neutron absorbers, etc. Boron carbide, because it is low-cost and easy to make, is widely used. It can replace expensive Diamond in some areas and is commonly used for grinding and drilling.

Control nuclear fission
Boron carbide absorbs a large amount of neutrons and does not form any radioactive isotopes. It is therefore an ideal neutron absorption material in nuclear power plants. The neutron absorber is also responsible for controlling the rate of fission. Boron carbide, which is used in nuclear reactors, is usually made in a controlled rod shape. But sometimes it’s made as a powder to increase the surface area.

Abrasive material
The high melting temperature of boron carbide makes it difficult to cast into artificial shapes. However, it can be easily shaped by smelting powder at high temperatures. It is used for grinding and drilling hard materials, such as gemstones and cemented carbide.

Coating paint
Boron carbide may also be used to coat warships or helicopters. It is light and resistant to armor-piercing bullets.

The munitions sector can make use of it to manufacture gun nozzles. Due to its wear resistance and hardness, boron-carbide sandblasting needles will gradually replace the existing sandblasting tools made of silicon carbide/tungsten and cemented carbide/tungsten.

Boron carbide also is used to make metal borides. It can be used for smelting sodium-boron, boron alloys, or special welding.

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