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What is Silicon nitride (HTML0)?
Inorganic silicon nitride has the chemical formula Si3N4. It is an important ceramic structural material, with high hardness. It has atomic crystalline structure, is naturally lubricious, is wear-resistant, and is resistant to oxidation. It is also resistant to the effects 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.
Silicon Nitride Application:

Ceramics made from silicon nitride are known for their excellent properties. These include high thermal stability, high oxidation resistant and high accuracy of product size. Silicon nitride has excellent chemical stability because it is a covalent, high-bonding compound that can form an oxygen protective film in air. It cannot be oxidized under 1200degC. It can be prevented from oxidizing further by the formation of a protective layer between 1200degC and 1600degC.

Silicon nitride is a ceramic material that can be used to make high-temperature components for engineering, refractories and advanced components for the metallurgical and chemical industries. It can also be used as sealing and corrosion-resistant materials in the chemical and machining industries.

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. Not only can it be used as a film that reduces the reflection of light incident, but the hydrogen atoms in the reaction products enter the silicon-nitride and the wafer during the deposition. The ratio between silicon nitride and silicon atoms does not always follow a 4:3 ratio, but can vary within a specific range based on 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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