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Boron carbide B4C powder application

2022-10-11 09:52:26  News

Overview of boron carbide B4C powder

Boron carbide, also known as black diamond, is an inorganic substance with the chemical formula B4C, usually gray-black micropowder.  Hard black shiny crystals.  The hardness is lower than that of industrial diamond, but higher than that of silicon carbide.  More brittle than most pottery.  Has a larger thermal energy neutron capture cross section.  Strong chemical resistance.  Not attacked by hot hydrogen fluoride and nitric acid.  Soluble in molten alkali, insoluble in water and acid.  Relative density (d204) 2.508~2.512. Melting point 2350 ℃.  Boiling point 3500 ℃.  It is one of the three hardest materials known (after diamond and cubic boron nitride) and is used in tank armor, body armor and many industrial applications.  It has a Mohs hardness of about 9.5.

Properties of boron carbide

Boron carbide is a nonmetallic material with important physical and chemical properties. It is the hardest boron compound after boron nitride Its high melting point, large neutron capture surface, low density, chemical inertness, and excellent thermal and electrical properties make boron carbide a new high-tech material Boron carbide can also be added to alumina and silicon carbide ceramics to improve the fracture toughness and strength of the materials; Because boron carbide can also absorb a large number of neutrons, it is more widely used

Boron carbide is a high temperature P-type semiconductor material. It has excellent properties such as strong hardness, low density, high chemical inertness, etc At 1000C, it can react with Fe, Ni, Ti, zr and other metals In addition, because atoms have a strong ability to absorb neutrons, boron carbide has good applications in atomic physics and medicine In addition, boron carbide has been widely used in microelectronics, nuclear physics, military and space technology due to these properties

Boron carbide B4C powder application

Boron carbide B4C powder application

Because of its low density, high strength, good high temperature stability and good chemical stability.  For wear-resistant materials, ceramic reinforcement phases, especially lightweight armor, reactor neutron absorbers, etc. widely used.  Boron carbide B4C powder can replace expensive diamond in some places and is often used for grinding, grinding, drilling and other applications.

control nuclear fission

Boron carbide can absorb a large number of neutrons without forming any radioactive isotopes.  It is an ideal neutron absorber in nuclear power plants.  Neutron absorbers mainly control the rate of nuclear fission.  Boron carbide is primarily made into controllable rods in nuclear reactors, but is also sometimes powdered to increase surface area.


Since boron carbide was used as an abrasive a long time ago.  Due to its high melting point, it is not easy to cast into artificial products, but it can be processed into simple shapes by melting powder at high temperature.  It is used for grinding, grinding, drilling and polishing of hard materials such as cemented carbide and precious stones.


Boron carbide can also be used as ceramic coatings for warships and helicopters.


In the arms industry, it can be used to make muzzles.  Boron carbide, extremely hard and wear-resistant, does not react with acid and alkali, high and low temperature resistance, high pressure resistance, density ≥2.46g/cm3;  microhardness ≥3500kgf/mm2, flexural strength ≥400MPa, melting point 2450℃.

Due to the above characteristics of wear resistance and high hardness of boron carbide nozzles, boron carbide sandblasting nozzles will gradually replace known sandblasting nozzles for cemented carbide/tungsten steel and silicon carbide, silicon nitride, alumina, zirconia and other materials.


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

Price of titanium disilicide

Due to the production cost, transportation cost, international market conditions, exchange rate, market supply and demand and other factors of titanium disilicide powder, the price of titanium disilicide will fluctuate randomly. Tanji New Materials Co., Ltd. aims to help the industry and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for titanium disilicide products, please feel free to send us relevant aluminum titanium disilicide products( ).

Titanium disilicide supplier

As a global supplier of titanium disilicide, Tanji New Materials Co., Ltd. is committed to having rich experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (zinc stearate powder, tungsten carbide, silicon nitride, titanium disilicide, Er2O3, iron disilicate, ferroboron), high-purity targets, functional ceramics and structural devices, and provided OEM services.

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Boron Carbide Properties
Other NamesB4C, B4C powder, black diamond, boron carbide powder,
boron-carbon refractory ceramic
CAS No.12069-32-8
Compound FormulaB4C
Molecular Weight55.26
AppearanceGray to Black Powder
Melting Point2763 °C
Boiling Point3500 °C
Density2.52 g/cm3
Solubility in H2OInsoluble
Electrical Resistivity0 to 11 10x Ω-m
Poisson's Ratio0.17-0.18
Tensile Strength350 MPa (Ultimate)
Thermal Conductivity31 to 90 W/m-K
Thermal Expansion4.5 to 5.6 µm/m-K
Vickers Hardness26 Mpa
Young's Modulus240 to 460 Gpa
Exact Mass56.037222
Boron Carbide Health & Safety Information
Signal WordWarning
Hazard StatementsH332
Hazard CodesXi
Risk Codes20
Safety Statements22-39
Transport InformationN/A
WGK Germany3

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