Application areas

Automotive field

The main applications of silicon nitride ceramics in the automotive field are: automotive diesel engines, automotive ceramic brake discs, automotive engine PCU power control systems, and ceramic substrates.


Comparison table of physical properties of ceramic substrate materials
Performance parameters/Substrate material Silicon Nitride Aluminum Nitride Alumina Oxide
Strength/MPa 600-800 350 400
Fracture Toughness/(Mpa m1/2) 6.0-8.0 2.7 3.0
Thermal Conductivity/[(m.K)] 80-100 150 20-30
Current carrying capacity/A ≥300 100-300 ≤100
Thermal resistance/(℃/W) ≤0.5(0.5 m Cu) ≤0.5(0.3 m Cu) ≥1.0(0.3 m Cu)