Silicon nitride ceramic is a kind of made of silicon nitride (Si3N4) material, which has excellent high temperature resistance, corrosion resistance and mechanical properties. Silicon nitride ceramic perform well at high temperatures, maintain high strength at 1200 ° C, and only break down at 1900 ° C . In addition, it also has good chemical resistance, able to resist almost all inorganic acids (except hydrofluoric acid) and less than 30% caustic soda solution
MATERIAL : Si3N4
DENSITY : 2.8
COLOR : Black / Blue / White
HRDNESS(Mohs scale) : 9
MAX WORKING TEMPERATURE : 1650
▼Performance characteristic
1. Excellent corrosion resistance : silicon nitride ceramic tube has good corrosion resistance to most acid, alkali, salt and other chemical media, and can maintain stability in harsh chemical environment
2. Excellent high temperature performance : can maintain stable mechanical properties in a high temperature environment of up to 1400℃, suitable for high temperature gas transport and heat exchange equipment
3. High strength and toughness : compared with traditional ceramics, silicon nitride ceramics exhibit higher strength and toughness and can withstand greater impact and load
4. Low friction coefficient and wear : the high hardness (Mohs hardness 8-9) and low friction coefficient of silicon nitride ceramics enable it to maintain a low resistance coefficient during the fluid transmission process, thereby improving the transmission efficiency
5. Good electrical insulation : silicon nitride ceramics are a good electrical insulation material suitable for applications requiring electrical isolation
6. Excellent mechanical properties : silicon nitride ceramics have high yield strength and fracture resistance, and can maintain stability under heavy load
7. Low thermal expansion coefficient : the low thermal expansion coefficient of silicon nitride ceramics can effectively reduce the deformation at high temperature and ensure the stability of the structure
8. High density : through high temperature and pressure sintering process, the density of silicon nitride ceramic tube can reach more than 98%, improve the strength and wear resistance of the material
▼Field of application
1.Semiconductor equipment
The vacuum-sealed threaded joints of the wafer transfer system are free from particle contamination and resistant to plasma corrosion
2. Chemical Engineering/Metallurgy
The threaded connection parts of the high-temperature reaction vessel and the molten metal conveying pipe are resistant to molten metal erosion and cause zero pollution
3. Aerospace
High-temperature threaded seals for rocket engine fuel pipelines are lightweight and resistant to instantaneous ultra-high temperatures
4. New energy
The corrosion-resistant threaded components of photovoltaic monocrystalline furnaces and hydrogen fuel cell stacks have a long service life and reduce maintenance frequency
▼Technical Properties of Si3N4 Silicon Nitride Ceramic