Silicon nitride ceramics is one of the hardest materials in the world and has been used in many industries. In recent years, with the advancement of processing technology, the technology for producing silicon nitride ceramics is getting better and better. Today, I will introduce the performance of silicon nitride ceramics, so that both manufacturers and users can make a reference.

1.Silicon nitride precision ceramics is a very high temperature resistant material. This material has no melting point at atmospheric pressure. It will decompose directly when the temperature reaches 1870 ℃. In practical use, once the temperature reaches 1200 ℃ at atmospheric pressure, the mechanical hardness of silicon nitride precision ceramics will decrease. 

2.As one of the strongest materials in the world, silicon nitride precision ceramics have high hardness and wear resistance, and low friction coefficient. It can be said that the surface is very smooth and does not need professional polishing treatment. 

3.Silicon nitride precision ceramics have high thermal shock resistance, such as thermal shock from room temperature to 1000 ℃. Silicon nitride precision ceramics will not crack at all, and the thermal conductivity of silicon nitride precision ceramics is high and the thermal expansion coefficient is relatively small. 

4.The strong corrosion resistance of silicon nitride precision ceramics is due to its strong chemical stability, which basically does not react with any inorganic acid except hydrofluoric acid, which means that silicon nitride precision ceramics have high acid resistance, and silicon nitride precision ceramics are not easy to be oxidized. 

5.Silicon nitride precision ceramics have another characteristic that needs to be noticed, that is brittleness. So in the actual use of silicon nitride precision ceramics, silicon nitride fibers will be used to increase the toughness of silicon nitride precision ceramics. 

   The five points mentioned just now are the basic characteristics of silicon nitride precision ceramics. With the improvement of silicon nitride ceramics and the different environments used in practice, silicon nitride ceramics will have other characteristics. Therefore, both manufacturers and users should understand the knowledge mentioned above.