Mechanical properties of silicon carbide
Silicon carbide is a kind of synthetic carbide with molecular formula of SiC. It is usually formed of silicon dioxide and carbon at a high temperature of 2000. D egree.
Density: the particle density of various silicon carbide crystal forms is very close, which is generally considered to be 3.20g/mm3. The natural bulk density of silicon carbide abrasive is between 1.2-1.6g/mm3, which depends on the particle size number, particle size composition and particle shape.
Hardness: the Mohs hardness of silicon carbide is 9.2, the Vickers microhardness is 3000-3300 kg / mm2, and the nuop hardness is 2670-2815 kg / mm2. It is higher than corundum in abrasives and second only to diamond, cubic boron nitride and boron carbide. Thermal conductivity: silicon carbide products have high thermal conductivity, small thermal expansion coefficient and high thermal shock resistance. They are high-quality refractory materials.
Because of its high hardness, high wear resistance, high corrosion resistance and high temperature strength, it is used for various wear-resistant, corrosion-resistant and high temperature resistant mechanical parts. It is a new type of engineering ceramic material.