Silicon nitride ceramic rings are made by sintering silicon nitride material and then precision machining. Silicon nitride possesses characteristics such as ultra-high mechanical strength, thermal shock resistance, lightweight, and high wear resistance.
Furthermore, compared to zirconium oxide and alumina, silicon nitride exhibits superior dynamic mechanical properties and is increasingly used in high-end machinery, aerospace, new energy, and semiconductor equipment.
Advantages of silicon nitride ceramic rings
High Strength and Impact Resistance
Silicon nitride is one of the most advanced ceramics in terms of overall mechanical properties, possessing high flexural strength, high compressive strength, resistance to mechanical impact, and resistance to breakage.
Thermal Shock Resistance
Silicon nitride has extremely strong resistance to sudden temperature changes and can adapt to conditions such as rapid cooling from high temperature, high-frequency thermal cycling, and thermal shock, while still remaining stable and not easily cracking.
Lightweight and suitable for high-speed operation
Silicon nitride has a lower density than steel and most ceramics, making it lighter and reducing centrifugal force, mechanical load, and high-speed rotation stability, thus reducing energy consumption.
Excellent wear resistance
Silicon nitride has an extremely low coefficient of friction and high hardness, making it a type of long-life wear-resistant component. It can provide precise guidance, is more wear-resistant, less prone to seizing, and has a longer maintenance cycle.
Performance characteristics of silicon nitride ceramic rings
| 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 | ||
Why choose GORGEOUS CERAMICS for customization?
GORGEOUS CERAMICS boasts 15 years of experience in ceramic manufacturing and has obtained ISO 9001:2015, IATF 16949:2016, and ISO 14001:2015 environmental management system certifications. This means that GORGEOUS can provide customers with higher quality silicon nitride ceramic rings.
FAQ
What are the advantages of silicon nitride ceramic rings compared to zirconium oxide?
Silicon nitride is lighter, has stronger thermal shock resistance, and is more suitable for high-speed rotation, high-temperature, and dynamic load environments.
Are silicon nitride ceramic rings suitable for high-speed equipment?
Yes, they are very suitable because silicon nitride has a low density and a low coefficient of friction, which can reduce heat generation and wear during high-speed operation.
Can silicon nitride ceramic rings be customized with complex structures?
Yes. GORGEOUS CERAMICS (GGS) supports custom-made dimensions, tolerances, slots, micropores, and complex irregular structures according to drawings.
