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Silicon Nitride Ceramics
Silicon Nitride is a high performance technical ceramic that is extremely hard and has exceptional thermal shock and impact resistance. It surpasses most metals high temperature capabilities and has a superior combination of creep and oxidation resistance and high strength. Additionally, its low thermal conductivity and high wear resistance make it an excellent material that can withstand the toughest of conditions in the most demanding industrial applications.
Main Properties of Silicon Nitride Ceramic
| Item | Unit | Si3N4 |
| Type | - | gas pressure sintered |
| Density | g/cm3 | 3.22 |
| Color | - | dark grey |
| Water Absorption | % | 0 |
| Young Modulus | Gpa | 290 |
| Vickers Hardness | Gpa | 18 - 20 |
| Compressive Strength | Mpa | 2200 |
| Flexural Strength | Mpa | 650 |
| Thermal Conductivity | W/m.K | 25 |
| Thermal Shock Resistance | Δ(°C) | 450 - 650 |
| Max. Working Temp. | °C | 1200 |
| Volume Resistivity | Ω ·cm | > 10^14 |
| Dielectric Constant | - | 8.20 |
| Dielectric Strength | kV/mm | 16 |
* Tests under room temperature environment;
* The above information is offered for comparison only. Exact
properties will vary depending on the manufacturing method.
Typical Applications of Silicon Nitride Ceramics
- Bearing technology in automotive engineering
- Centering Pins
- Drawing Tools
- Forming Applications
- High-performance Cutting Tools
- Indexable Inserts
- Inserts
- Machining
- Mechanical Engineering Special Applications
- Nozzles
- Pumps, Components for
- Seal Rings
- Sealing Technology (Seal Rings, Bearings)
- Tube Forming Tools
- Tubes and Pipes
- Valves, Components for
- Welding Rollers
- Welding Technology
