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.
Resistenza agli shock termici
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.
Ottima resistenza all'usura
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
| Nome | nitruro di silicio | |||
| Densità | g/cm3 | 3.18-3.40 | ||
| Resistenza alla compressione | MPa | 3000 | ||
| Resistenza alla flessione a 25°C | MPa | 760-830 | ||
| Modulo di Weibull m | – | 12-20 | ||
| Tenacità alla frattura KIO | MPa m1/2 | 6.2-8 | ||
| Modulo di Young | Media dei voti | 300 | ||
| Durezza | Media dei voti | 15 | ||
| Rapporto di Poisson | – | 0.26 | ||
| Proprietà fisiche del nitruro di silicio | ||||
| Conduttività termica a 20°C | W/mK | 25-28 | ||
| Parametro di shock termico R1 | K | 550-690 | ||
| Parametro di shock termico 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 | ||
| Temperatura massima (ossidante) 2 | °C | 1400 | ||
| costante dielettrica | °C | 1200 | ||
| Resistività di volume a 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.
Domande frequenti
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.
Can silicon nitride ceramic rings replace metal rings?
In some harsh environments, silicon nitride ceramic rings can replace stainless steel and other hard alloy materials. Compared to metal materials, silicon nitride ceramics have advantages in applications involving high-speed rotation, high-temperature environments, vacuum environments, corrosive environments, and applications requiring electrical insulation.
However, they cannot completely replace metal rings. A reasonable evaluation is needed based on the actual load, fit, operating temperature, and installation structure.
Send your requirements to GORGEOUS CERAMICS (GGS), and our professional engineers will provide you with the best solution.
Which industries use silicon nitride ceramic rings?
Many industries use silicon nitride ceramic rings, including semiconductor manufacturing equipment, wafer processing equipment, vacuum equipment, precision bearings, new energy lithium battery equipment, photovoltaic equipment, chemical equipment, automated machinery, medical equipment, high-speed motors, and aerospace equipment. If you are unsure whether silicon nitride or other ceramic materials are suitable for your industry, please send your questions to us, and GORGEOUS CERAMICS (GGS) will provide you with a satisfactory answer.
Which are the leading manufacturers of custom silicon nitride rings in China?
GORGEOUS CERAMICS (GGS) specializes in the customization and precision machining of various ceramic structural components, including ceramic rings, ceramic shafts, ceramic bearings, semiconductor ceramic parts, etc., with a wide selection of materials. They also support small-batch prototyping and high-precision machining.
SANHUAN specializes in electronic ceramics, structural ceramics, and semiconductor ceramics, possessing superior R&D and manufacturing capabilities, suitable for high-precision custom production.
Shandong Industrial Ceramics Research has long been engaged in the R&D and industrialization of advanced ceramic materials, possessing extensive experience in specialty ceramics.
When selecting a supplier, we recommend focusing on material performance and machining precision. For high-end product manufacturing, manufacturers with stable batch delivery and engineering technical support capabilities are more valuable for cooperation.
What is the highest temperature that silicon nitride ceramic rings can withstand?
In a normal air atmosphere, the operating temperature of silicon nitride ceramics can generally reach 1000°C. In special atmospheres (inert and protective atmospheres), even higher temperatures can be reached for a shorter period of time.
How should I choose between silicon nitride ceramic rings and alumina ceramic rings?
Silicon nitride and alumina ceramics each have their advantages. Alumina ceramics offer balanced performance and are affordable, making them one of the most commonly used ceramic materials in low- to mid-range equipment. Silicon nitride ceramics, on the other hand, possess superior flexural strength, fracture toughness, impact resistance, and thermal shock resistance. In high-speed, high-load operating equipment, silicon nitride ceramics offer a longer service life.
If your equipment operates at high speeds for extended periods, experiences high impact loads, and requires frequent start-stop cycles, then GORGEOUS CERAMICS (GGS) recommends using silicon nitride ceramics.
