Silicon Nitride is an ideal material for bearings. Ceramic bearings have good wear and corrosion resistance, and great mechanical strength under high temperature. Nextgen Advanced Materials supplies the Silicon Nitride Bearing with high quality and fast delivery. Meanwhile, the customization is available.
You can rest assured to buy Nextgen Silicon Nitride Bearing from our factory and we will offer you the best after-sale service and timely delivery. The high standards we have established since our inception and maintained to date have earned us a solid reputation and helped us to attract a large number of new customers and talents.
Silicon Nitride is a high-melting-point ceramic material that is extremely hard and relatively chemically inert. The material is prepared by heating powdered silicon between 1300 °C and 1400 °C in an atmosphere of nitrogen. Then the powder of silicon nitride can be sintered to designed shape. Silicon Nitride is an ideal material for bearings. Ceramic bearings have good wear and corrosion resistance, and great mechanical strength under high temperature. Si3N4 bearings have already been applied in automobiles, rockets high-speed engines, equipment working in a corrosive environment and some performance model cars. As the price of ceramic materials decreased, it could have more applications.
| Si3N4 | ZrO2 | Steel | |
| Working temperature | 800℃ | 800℃ | 180℃ |
| Density | 3.24 g/cm3 | 6 g/cm3 | 7.8 g/cm3 |
| Thermal expansion coeff. | 3.4×10-6 | 10.5 | 12.5×10-6 |
| Hardness, HV | 1500 | 1300 | About 750 |
| Young’s Module | 320 GPa | 210 GPa | 208 GPa |
| Corrosion resistance | Good | Good | Poor |
| Thermal conductivity | Low | Low | High |
| Magnetism | None | None | Yes |
| Wear resistance | Excellent | Excellent | Good |
