Nano Boron Carbide (B4C) - Powder

Color: Black

Form: Hexahedron

BET: 39&5.2 (m2/g)

Bulk Density: 1&1.49 (g/cm3)

Technical Description of b4c powder

Nano boron carbide, ultra fine boron carbide powder by variable current laser ion beam gas phase method, high purity, small particle size, uniform distribution, large specific surface area, high surface activity, low loose density, is a kind of artificial synthetic ultra hard material, hardness is only inferior to diamond, Mohs hardness 9.46, micro hardness 5600 -- 6200Kg/mm2,  Specific gravity 2.52g/cm3, melting point 2250℃, and acid, alkali solution can not react, with high chemical potential, neutron absorption, wear resistance and semiconductor conductivity.  It is one of the substances that are acid stable in concentrated or dilute acid or alkaline solutions.

With stable physical and chemical properties, applied to hard materials grinding, grinding, drilling and so on.

Application of b4c powder

1.Neutron absorption and radiation protection materials: element B has a neutron absorption cross section of up to 600barn and is the main material of choice for nuclear reactor deceleration elements - control rods or radiation protection components;

2.Composite armor material: using its lightweight, super hard and high modulus and other characteristics, used as light body armor and bulletproof armor material.  Bulletproof armor made of boron carbide is more than 50 percent lighter than the same type of steel body armor.  Boron carbide is also an important bulletproof armor material for land armored vehicles, attack helicopters and civil aircraft.  Such as AH 64 Apazhe (AH 64 Apazhe), Super Cobra (Super Puma), Black Hawk and other helicopters are made of boron carbide armor;

3.Semiconductor industry components and thermoelectric components: boron carbide ceramics have semiconductor characteristics and good thermal conductivity, can be used as high temperature semiconductor components, also can be used in the semiconductor industry gas distribution disk, focusing ring, microwave or infrared window, DC plug, etc.  B4C combined with C can be used as high temperature thermocouple element, the use of temperature up to 2300℃, but also can be used as radiation resistance thermoelectric element;

4.Mechanical seal parts: boron carbide is an important material for mechanical seal due to its super hard properties and excellent wear resistance.  Because of its relatively high cost, it is mainly used in some special mechanical sealing occasions;

5.Nozzle material: boron carbide high hardness and excellent wear resistance, make it become an important nozzle material.  Boron carbide nozzle has the advantages of long life, relatively low cost and time saving.  The life of boron carbide nozzle is dozens of times that of alumina nozzle, and many times higher than that of WC and SiC nozzle;

6.Refractory materials, fine engineering ceramics, such as high precision nozzle, sealing ring, nuclear industry, national defense industry.