Boron carbide (B4C)-Sputtering Target
Product Description
Characteristic
Boron carbide (chemical formula approximately B4C) is an extremely hard boron–carbon ceramic and covalent material, as well as numerous industrial applications. With a Vickers Hardness of >30 GPa, it is one of the hardest known materials, behind cubic boron nitride and diamond.
Chemical formula：B4C
Molar mass：55.255 g/mol
Appearance：dark gray or black powder, odorless
Density：2.52 g/cm3, solid.
Melting point：2,763 °C (5,005 °F; 3,036 K)
Boiling point：3,500 °C (6,330 °F; 3,770 K)
Solubility in water：insoluble
Crystal structure：Rhombohedral
Application
The ability of boron carbide to absorb neutrons without forming long-lived radionuclides makes it attractive as an absorbent for neutron radiation arising in nuclear power plants and from anti-personnel neutron bombs. Nuclear applications of boron carbide include shielding, control rod and shut down pellets. Within control rods, boron carbide is often powdered, to increase its surface area.