Introduction to Silicon nitride
Silicon nitride is an inorganic substance with the chemical formula Si3N4. It is an important structural ceramic material with high hardness, inherent lubricity, wear resistance, and atomic crystals; it is resistant to oxidation at high temperatures. Moreover, it can resist the impact of cold and heat. It will not be broken if it is heated to more than 1000℃ in the air, cooled rapidly and then heated rapidly.