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However, because of its own high covalent bond content (more than 90%), the thermodynamic and kinetic conditions of the process are complex, it is difficult to get a high purity, small particle size and uniform boron carbide powder, the following are several process methods that can prepare better quality boron carbide powder.
Title I Physical properties of boron carbide:
The density of boron carbide is close to 2.52 g/cm³.
• The melting point of boron carbide is 2445 °C.
• Boron carbide hardness ranges from 2900 to 3580Kg/mm2 (Knoop 100 g).
• The fracture toughness of boron carbide is 2.9-3.7 MPam−1/2.
• The Young's modulus of boron carbide is 450-470 GPa.
• The conductivity of boron carbide at 25 °C is 140 S.
• Thermal conductivity at 25 °C is 30-42 W/m.K
• Thermal neutron capture for boron carbide is 600 barn.
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