Silicon nitride ceramics, as one of the hardest materials in the world, have been applied in many industries. In recent years, with the development of industry, more and more companies have better technology for producing silicon nitride ceramics. So today, let's popularize the characteristics of silicon nitride ceramics for reference by manufacturers and acceptance units.

First, silicon nitride ceramics are a very high-temperature resistant material. This substance has no melting point at normal pressure. When the temperature reaches 1870℃, it will decompose directly. In practical use, once the temperature reaches 1200 degrees Celsius at normal pressure, the mechanical hardness of silicon nitride ceramics will decrease.

Secondly, silicon nitride ceramics, as one of the hardest materials in the world, have very high hardness and wear resistance, with an extremely low friction coefficient. It can be said that the surface is very smooth and does not require professional polishing.

Thirdly, the third advantage of silicon nitride ceramics is their high thermal shock resistance. For example, when subjected to thermal shock from room temperature to 1000 degrees Celsius, silicon nitride ceramics do not crack at all. Silicon nitride ceramics have a high thermal conductivity and a relatively small thermal expansion coefficient.

Fourth, the high corrosion resistance of silicon nitride ceramics is due to their strong chemical stability, as they do not react with any inorganic acids except hydrofluoric acid, indicating that silicon nitride ceramics have high corrosion resistance. They have strong acid resistance and are not easily oxidized.

Fifth, another characteristic of silicon nitride ceramics that needs attention is that they are relatively brittle, so when using silicon nitride ceramics, silicon nitride fibers are used to increase the toughness of the silicon nitride ceramic material.

The five points mentioned above are the basic characteristics of silicon nitride ceramic materials. With the innovation of silicon nitride ceramic technology and the different practical use environments, specific silicon nitride ceramic materials may have other characteristics, so whether in production or acceptance, the above knowledge should be understood.