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Silicon nitride ceramic
Silicon nitride ceramics are inorganic material ceramics that do not shrink during sintering.
Silicon nitride hardness is extremely high, especially hot-pressed silicon nitride, is one of the hardest substances in the world, with high hardness, low density, high temperature resistance and other properties.
Si3N4 has good impact resistance due to its low thermal expansion coefficient and high thermal conductivity.
Silicon nitride ceramics is extremely high temperature resistant, can be maintained until the high temperature of 1200 ℃ and not falling, heated would not melt in the melt into the body, until the 1900 ℃ to decompose, and chemical corrosion resistance, almost all of the inorganic acid and 30% caustic soda solution, under also ability a lot of organic acid corrosion;It is also a kind of high performance electrical insulation material.
Properties of Silicon Nitride :
Low density (3.2 g/cm3);Low-friction and non-magnetic
High fracture toughness (7 MPam1/2)
Good flexural strength (850 MPa)
Low thermal expansion coefficient (3.2 10-6K-1)
Creep resistance;High hardness
Excellent Wear and Corrosion Resistance
  Silicon Nitride applications:
Bearing balls and rollers
Cutting tools;Turbine blades
Valves, turbocharger rotors for engines
Glow plugsMolten metal handling
Thermocouple sheaths;Welding nozzles
Welding jigs and fixtures
For more information about ceramics,please contact our engineers in time
 

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