Silicon nitride bearings are a type of rolling-element bearing made from silicon nitride ceramics. These bearings are known for their high strength, durability, and resistance to wear and corrosion. Silicon nitride bearings can operate at high speeds and temperatures, making them ideal for use in demanding industrial applications.
Properties | Values |
---|---|
Density | 3.2-3.3 g/cm³ |
Young's Modulus | 200-300 GPa |
Poisson's Ratio | 0.26 |
Flexural Strength | 500-1000 MPa |
Compressive Strength | 3000-4000 MPa |
Fracture Toughness | 6-8 MPa·m^0.5 |
Thermal Conductivity | 20-200 W/m·K |
Thermal Expansion | 2.5-3.2 x 10^-6 K^-1 |
Maximum Service Temp | 1200-1400 °C (in air) |
Dielectric Constant | 7-10 |
Resistivity | 10^14-10^18 Ω·cm |