What are the characteristics of silicon nitride ceramics?

Silicon nitride ceramic is an important structural ceramic material. It is a super-hard substance, which has lubricity and wear resistance. It is atomic crystal and is resistant to oxidation at high temperature. What are the characteristics of silicon nitride ceramics? ? Next, Pintejin Ceramics will introduce to you.

Properties of Silicon Nitride Ceramics

1. Silicon nitride ceramic is a very high temperature resistant ceramic material. This material has no melting point under normal pressure, and will decompose directly when the temperature reaches 1870 °C.

In actual use, once the temperature under normal pressure reaches 1200 degrees Celsius, the C mechanical hardness of silicon nitride ceramics will decrease.

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

3. The third advantage of silicon nitride ceramics is that they have high thermal shock resistance. For example, when thermal shocks from daily room temperature to 1,000 degrees Celsius hit, silicon nitride ceramics will not crack at all, and nitrogen Silicone ceramics have a high thermal conductivity and a relatively small thermal expansion coefficient.

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

5. Another characteristic of silicon nitride ceramics that needs attention is that it is relatively brittle, so when using silicon nitride ceramics in practice, silicon nitride fibers will be used to increase the toughness of silicon nitride ceramics.

The above are the characteristics of silicon nitride ceramics brought to you by Pintejin Ceramics. Pintejin Ceramics is a manufacturer specializing in the production and machining of ceramics, focusing on the machining of alumina ceramic parts and zirconia ceramics, and can process ceramic products according to your needs.