Silicon Nitride Solutions

Silicon Nitride Solutions

Silicon nitride has long been used in high-temperature applications. In particular, it was identified as one of the few monolithic ceramic materials capable of surviving the severe thermal shock and thermal gradients generated in hydrogen/oxygen rocket engines. Silicon nitride is often used as an insulator and chemical barrier in manufacturing integrated circuits  Some key properties of silicon nitride include: low density, superior thermal shock resistance, good oxidation resistance, mechanical fatigue resistance and high wear resistance. Typical Applications Include: reciprocating engine components, jet propulsion components, orthopedic applications, thermocouple sheaths, arc welding nozzles, chemical insulators, electrical insulators, metal cutting tools, furnace fixtures, and bearing balls. Contact us for more info.

Density, ρ g/cm3 ASTM C20 3.31  g/cm3 3.31
Water Absorption 0.0  % @ room temperature (R.T.) 0
Hardness  Mohs 9
Hardness Knoop (kg/mm2) 2200
Compressive Strength MPa @ R.T.  MPa @ R.T.  689-2760
Fracture Toughness, Kic  MPa x m1/2 5.0-8.0
Max. Use Temperature (in air)  ºC 1500
Thermal Shock Resistance  ∆T (ºC) 750
Thermal Conductivity W/m-K @ R.T. 27
Coefficient of Linear Thermal Expansion, αl  µm/m-ºC  (~25ºC through ±1000ºC) 3.4
Dielectric Constan 1 MHz @ R.T. 7
Dielectric Strength kV/mm 17.7