Silicon nitride, mainly consisting of Si3N4, has excellent thermal shock resistance and high-temperature strength. These properties make it ideal for use in automotive engines and gas turbines. It is used for turbocharger rotors, glow plugs and hot plugs in diesel engines, and is being applied in many other 
diverse applications.

Properties of Silicon Nitride

1. Very low density
2. High wear resistance and corrosion resistance
3. High temperature resistance
4. Good flexural strength and high fracture toughness
5. Very good thermal shock resistance
6. Dimensional stability and aging resistance
7. Excellent sliding properties (tribology)
8. Biocompatibility (for use in hygiene and the food and beverage industry)