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Silicon nitride Powder
Inorganic substance Si3N4 has the chemical formula. This is an important ceramic structural material, with high hardness.
Silicon Nitride Properties:
Powdered silicon nitride can be gray, off-white or white. It is an insoluble, high-temperature compound with no melting point and a strong resistance to creep. The load softening of reactive sintered Silicon Nitride without a Binder is above 1850degC.
It has two hexagonal crystal structures, a andb. Its decomposition is 1850degC when exposed to 110MPa of nitrogen and 1800degC with air. The powder is characterized by a low thermal coefficient and a high thermal conductivity.
Other than hydrofluoric acid or hot phosphoric, silicon nitride has a high corrosion resistance.
Silicon Nitride Application:
Due to its excellent properties, silicon nitride is often used in the manufacture of bearings. Other mechanical components, such as turbine blades or mechanical seal rings are also made from this material. The heating surfaces of engine parts can be made from silicon nitride materials, which resist high temperatures and are difficult to transfer heat.
The material silicon nitride, which is a refractory high-grade material, is widely used. SI3N4 refractory material is used for blast furnace body, and other parts with sic. It is also used with BN in SI3N4 BN material to create horizontal continuous casting separator rings. SI3N4 BN horizontal continuous cast separation ring has a fine-structured ceramic material, with a uniform structure and remarkably high mechanical strength.
Silicon nitride can be used as a ceramic material for high temperature engineering components, advanced materials in metallurgical industries, sealing and anti-corrosion materials in chemical industries, cutting and tooling in the machining sector, etc.
The silicon nitride used for ultra-high temperature gas engines, aircraft, electric furnaces, and other high-temperature applications can also be found in solar cells.
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The powder is silicon nitride
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