Silicon nitride is considered a very important engineering ceramic because it is available in many different forms, each with unique properties. At high temperatures, silicon nitride exhibits excellent mechanical properties, including low density, high flexural strength, high elastic modulus and fracture toughness, high wear, and resistance to solid particle erosion. In other words, the material is very strong, very tough. The material also exhibits excellent thermal properties, with minimal expansion and contraction due to temperature, and the ability to withstand thermal shock. Finally, silicon nitride has excellent chemical properties, including stability to most acids and bases, corrosive gases and liquid metals.
Silicon nitride ceramic is also a very important structural ceramic. It is a superhard material with low density, lubricity and wear resistance. It does not react with other inorganic acids except hydrofluoric acid and is corrosion resistant. Strong ability, anti-oxidation at high temperature.
Moreover, it can also resist cold and heat shocks. It can be heated to more than 1000 degrees in the air, and it will not break when it is cooled and heated rapidly. , mechanical seal ring, permanent mold and other mechanical components.
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