GORGEOUS CERAMICS (GGS) specializes in manufacturing high-performance silicon nitride ceramic disks, custom-processing silicon nitride ceramic components for extreme operating conditions that offer robust mechanical properties, thermal shock resistance, and wear resistance.
We can customize silicon nitride ceramic disks of various diameters, thicknesses, surface finishes, and complex geometries according to customer drawings and technical requirements.
Properties of silicon nitride ceramics
| Name | Silicon nitride | |||
| Density | g/cm3 | 3.18-3.40 | ||
| Compressive Strength | MPa | 3000 | ||
| Flexural Strength @ 25°C | MPa | 760-830 | ||
| Weibull-Modulus m | – | 12-20 | ||
| Fracture Toughness KI | MPa m1/2 | 6.2-8 | ||
| Young‘s Modulus | GPa | 300 | ||
| Hardness | GPa | 15 | ||
| Poisson’s Ratio | – | 0.26 | ||
| Physical properties of silicon nitride | ||||
| Thermal Conductivity @ 20°C | W/mK | 25-28 | ||
| Thermal Shock Parameter R1 | K | 550-690 | ||
| Thermal Shock Parameter R2 | W/m | 15-18 | ||
| CTE1 25°C ➞ 250°C | 10-6/K | 1.9 | ||
| CTE1 25°C ➞ 1000°C | 10-6/K | 3.1 | ||
| Maximum Temperature (Oxidizing) 2 | °C | 1400 | ||
| Dielectric constant | °C | 1200 | ||
| Volume Resistivity @ 25°C | ohm-cm | 1014 | ||
Technical specifications, material properties, and performance data are typical values and are for reference only. Actual values may vary depending on manufacturing tolerances, testing conditions, material grades, and application environments.
For critical engineering applications, please contact GORGEOUS CERAMICS (GGS) for detailed material reports, inspection data, and technical support.
Applications of silicon nitride ceramic disks
High-speed bearing systems
Silicon nitride ceramic discs can be used in high-speed rotating equipment that requires lightweight construction, high wear resistance, and extremely high dimensional stability, such as precision bearing assemblies, turbocharging systems, high-speed spindles, and aerospace rotating equipment.
Semiconductor Manufacturing Equipment
Silicon nitride ceramic disks possess plasma resistance, excellent thermal stability, and low contamination, making them ideal for the needs of semiconductor processing systems.
Common applications include wafer processing systems, vacuum equipment, and process chamber components.
Aerospace Systems
Silicon nitride is widely used in aerospace due to its lightweight structure and high-temperature resistance. Common applications include turbine-related components and thermal management systems.
FAQ
What are the differences between alumina ceramic discs and silicon nitride ceramic discs?
Silicon nitride has a lower density and better thermal shock resistance, while alumina is more versatile.
Can silicon nitride ceramic discs operate at high temperatures?
Silicon nitride operates at temperatures up to approximately 1200°C.
Are silicon nitride ceramic discs suitable for bearing applications?
Yes, silicon nitride is lightweight and has good wear resistance, making it one of the most commonly used ceramic components in hybrid bearings and all-ceramic bearing systems.
Can you machine custom holes and complex geometries?
Yes, GORGEOUS CERAMICS (GGS) can machine custom diameters, hole diameters, slots, grooves, and complex disc shapes according to customer drawings.
