lack silicon carbide is made from quartz sand, petroleum coke and high-quality silica as raw materials, and is smelted at high temperature in a resistance furnace. Its mechanical strength is higher than corundum, and it is brittle and sharp. So what are the functions and uses of black silicon carbide?
Black silicon carbide contains about 98.5% SiC, and its toughness is higher than green silicon carbide. It is mostly used to process materials with low tensile strength.
Black silicon carbide has stable chemical properties, high thermal conductivity, small thermal expansion coefficient, and good wear resistance.
The refractory material made of it is thermal shock resistant, small in size, light in weight, high in strength, and has good energy saving effect.
Low-grade silicon carbide is an excellent deoxidizer. It can speed up steelmaking, facilitate control of chemical composition, and improve the quality of steel.
Abrasive. Mainly used for making grinding wheels, sandpaper, oil stones, grinding heads, grinding pastes, and surface grinding and polishing of monocrystalline silicon, polycrystalline silicon and various devices in photovoltaic products, etc.
Refractory materials. It can be used as metallurgical deoxidizer and high temperature resistant material to make high temperature furnace components, supports, etc.
Non-ferrous metals. It has been applied in the steel industry and metallurgical mineral processing industry.
Functional ceramics. It can not only reduce the capacity of kiln furniture, but also improve the quality of kiln products and shorten the cycle. It is an ideal indirect material for baking and sintering of ceramic glazes, high-temperature non-oxide ceramics and reaction-sintered ceramics.
