Silicon Nitride Seal Rings Description
Due to the even performance in high temperature, Si3N4 is a commonly used ceramic material in the metallurgical industry. It has excellent thermal shock resistance due to the microstructure. The creep and oxidation resistance of Si3N4 is also superior, its low thermal conductivity and high wear resistance also make it an outstanding material that can withstand conditions of most industrial applications.
Seal rings produced by silicon nitride provide excellent mechanism strength and durability.
There are 5 different methods to produce Silicon Nitride including SRBSN, GPSN, HPSN, HIP-SN and RBSN, make the application and working material different slightly. In these 5 methods of production, GPSN is most commonly used to produce Si3N4 components.
Silicon Nitride Seal Rings Specifications
GPSN
| Property |
|
Unit |
| Color |
Grey |
|
| Density |
3.21 |
g/cm3 |
| Compressive Strength |
3000 |
MPa |
| Flexural Strength |
800 |
MPa |
| Weibull-Modulus m |
15 |
|
| Fracture Toughness KIc |
6.5 |
MPa m^1/2 |
| Young‘s Modulus E |
320 |
GPa |
| Poisson Ratio |
0.28 |
|
| Hardness Vickers (HV 1) |
16 |
GPa |
| Thermal Properties |
| Maximum Temperature |
| Inert Gas |
1200 |
°C |
| Air |
1100 |
°C |
| Thermal Conductivity |
25 |
|
| @ 20°C |
28 |
W/mK |
| @ 1000 |
16 |
W/mK |
| Thermal Expansion |
| 20–100°C |
2 |
10-6/K |
| 20–1000°C |
3.5 |
10-6/K |
| Thermal Shock parameter R1 |
600 |
K |
| Thermal Shock parameter R2 |
15 |
W/mm |
| Electrical Properties |
| Resistivity at 20°C |
10^12 |
Ωcm |
| Resistivity at 800°C |
10^7 |
Ωcm |
| Dielectric constant |
6 |
1 MHz |
Silicon Nitride Seal Rings Applications
Silicon Nitride can make products including:
- Advanced ceramic tubes
- Bearing rollers
- Ceramic cutting materials
- Cyrol bearing rollers
- Nozzles
- Seal rings
- Tube forming tools
- Mechanical engineering special applications
Silicon Nitride Seal Ring Packing
Our Silicon Nitride Seal Ring is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
