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Inorganic silicon nitride has the chemical formula Si3N4. It is an important ceramic structural material, with a high degree of hardness, lubricity and wear resistance. Atomic crystals are also present. It is also resistant to the impact of both cold and heat. It will not break if you heat it to over 1000 in the atmosphere, cool it quickly and then heat it rapidly. Because of its excellent properties, silicon nitride is often used in the manufacture of bearings. turbine blades. mechanical seal rings. permanent molds. Silicon nitride is a ceramic that resists high temperatures, but also transfers heat poorly. It can therefore be used as the heating surface of engine components to improve quality, reduce fuel consumption, and increase thermal efficiency.
Ceramics made from silicon nitride are known for their excellent properties. These include high thermal stability, high oxidation resistant and high product accuracy. Silicon nitride has excellent chemical stability because it is a covalent, high-bonding compound that can form an oxygen protective film when exposed to air. It cannot be oxidized under 1200degC. It can be prevented from oxidizing further by the formation of a protective layer between 1200-1600degC.
Silicon nitride is a ceramic material that can be used to make high-temperature components for engineering, advanced refractories for the metallurgical sector, sealing components and corrosion-resistant components in chemical industry and tools and cutting tool in machining.
It can be used to bond materials in different proportions.
Silicon nitride is also used in solar cells. It is possible to use the silicon-nitride coating after the PECVD process. This film can reduce the reflections caused by incident light. The ratio between silicon nitride and silicon atoms does not always follow a 4:3 ratio, but can vary within a specific range according to the different processing conditions. The film’s physical properties are different for different atomic proportions.
Silicon nitride is widely used for its outstanding electrical, mechanical and thermal properties.
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