Performance and application of boron carbide powder

Characteristics 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. Boron carbide is one of the most stable substances to acid, and it 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 boron oxide formed by oxidation at higher temperatures is lost in the gas phase, causing it to become unstable and oxidize to form carbon dioxide and boron trioxide.

The Mohs hardness of boron carbide is about 9.5, which is the third hardest substance known after diamond and cubic boron nitride, and its hardness is higher than that of silicon carbide. Boron carbide has the characteristics of low density, high strength, good high temperature stability, and good chemical stability.

Overview of boron carbide B4C powder

Boron carbide has the characteristics of low density, high strength, high temperature stability and good chemical stability. Therefore, it is widely used in wear-resistant materials, ceramic reinforcement phases, especially in lightweight armor, reactor neutron absorbers, etc. In addition, compared with diamond and cubic boron nitride, boron carbide is easy to manufacture and low in cost, so it is more widely used. It can replace expensive diamonds in some places, and is usually used for grinding, grinding, drilling and other aspects.

B4C powder has the characteristics of high purity, small particle size distribution and large specific surface area. B4C powder is a synthetic superhard material with a hardness of 9.46; the microhardness is 56-6200Kg/mm2, the ratio is 252 g/cm3, and the melting temperature is 2250 degrees Celsius.

Application of Boron Carbide B4C Powder

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

In the munitions industry, it can be used to make gun nozzles. 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.

Price of boron carbide B4C powder

The price of boron carbide B4C powder will vary randomly with factors such as production cost, transportation cost, international situation, and market supply and demand of boron carbide B4C powder. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for boron carbide B4C powder, please feel free to send an inquiry to get the latest price of boron carbide B4C powder.

Suppliers of Boron Carbide B4C Powder

As a global boron carbide B4C powder supplier, Tanki New Materials Co., Ltd has extensive experience in the performance, application and cost-effective manufacturing of advanced and engineering materials. The company has successfully developed a series of powder materials (titanium diboride, Silicon hexaboride, molybdenum boride, iron boride), high-purity targets, functional ceramics and structural devices, and provide OEM services.