Silicon nitride is an important structural ceramic material. It is a superhard substance , which has lubricity and wear resistance, and resists oxidation at high temperature for atomic crystals. Moreover, it can also resist cold and heat shocks. When the air is heated to above 1000°C, it will not shatter after rapid cooling and then rapid heating.
It is precisely because silicon nitride ceramics have such excellent characteristics that people often use it to manufacture mechanical components such as wear-resistant ceramic tubes, thermal protection tubes, wear-resistant ceramic tubes, and permanent molds.
If silicon nitride ceramics with high temperature resistance and low heat transfer are used to make the heating surface of high temperature wear-resistant parts , it can not only reduce the weight of the product itself, save fuel, but also improve thermal efficiency. Silicon nitride ceramic is an inorganic material ceramic that does not shrink during sintering.

Silicon nitride ceramic is an inorganic material ceramic that does not shrink when sintered. Silicon nitride ceramic is a superhard material with lubricity and wear resistance. Except for hydrofluoric acid, it does not react with other inorganic acids, and has strong corrosion resistance and high temperature oxidation resistance. It also resists hot and cold shocks, heats up to over 1000 degrees in air , cools down quickly, then heats up quickly without cracking.

Silicon nitride ceramics have high density and good wear resistance, and are very suitable for low-pressure die-casting materials. The ceramic tube has excellent protection, impermeability and excellent precision. Service life is many years with regular maintenance.

Due to its excellent high temperature resistance and corrosion resistance, silicon nitride ceramics can be used in chemical corrosion-resistant and wear-resistant parts, semiconductor industry, including missile radome for national defense industry, ceramic materials for biomedical use, nuclear power main pump as sealing ring, Silicon nitride ceramic rings for polysilicon reduction furnaces, heat-insulating disk covers, and newly developed silicon nitride ceramic coil springs, which not only maintain high strength at 1000°C, but also have strong corrosion resistance, are used in special valves . Features of
silicon nitride ceramic tube
1. Forming: cold isostatic pressing (CIP)
2. Sintering: GPSN/HPSN
3. High strength and good compactness
4. Low thermal expansion coefficient
5. Excellent thermal shock resistance
6. Molten aluminum and non-ferrous metals will not wet
7. Good corrosion resistance