Silicon Nitride Ceramic Ring Thermal Insulation Ceramic Ring
Product Overview
Silicon nitride products are gradually replacing 99 ceramic
alumina, silicon carbide, nitrogen carbon and other ceramic
products with their superior performance (wear resistance,
corrosion resistance, long life).
The company's silicon nitride products are divided into two types:
air pressure sintering and reaction sintering. Air pressure
sintering silicon nitride is mainly based on pipe fittings and
shaped parts, and reaction sintering silicon nitride is mainly
based on pipe fittings. With high quality and low price, we have
cooperated with many foreign customers.
Silicon nitride ceramics have high strength, especially high-purity
silicon nitride, which is one of the hardest substances in the
world.
Very strong corrosion resistance, can be used in strong acids and
alkalis, soluble in hydrofluoric acid but does not react with other
organic acids
Product parameter table
Material
Project | Alumina AL203 | Silicon carbide sic | Silicon nitride sin | Silicon nitride sin |
| Color | Ivory | black | black | Milky white, gray black |
| Content(%) | 99.5 | …… | …… | …… |
| Main features | - Excellent high frequency electrical insulation
Good wear resistance preservative Strong High hardness
| - Good high temperature strength
- High thermal conductivity
- Strong alkali resistance
- Wear-resistant
- Lightweight
| - Good high temperature strength
- Strong impact resistance
- Strong corrosion resistance
- Lightweight
| - High strength and high impact resistance
- Good self-lubricating
- Strong alkali resistance
- Smooth surface
- Good toughness
|
| The main purpose | - Wear parts
- High temperature parts
- Corrosion resistant parts
| - Machinery Seal
- Sliding parts
- High temperature parts
| - Molten metal parts
- Metal plasticity
- Processed parts
| - Industrial knives
- Pump parts
- Wear parts
|
| Density | Kg/m³ | 3.9*10 | 3.16*10 | 3.3*10 | 6.0*10 |
Mechanical behavior
| Vickers hardness | Gpa | 16.0 | 23.0 | 14.0 | 13.2 | 12.7 |
| Flexural strength | Mpa | 360 | 450 | 1020 | 1000 | 1470 |
| Compressive strength | Mpa | 2350 | …… | …… | …… | …… |
| Fracture toughness | Mpa | 4 | 2-3 | 7 | 4-5 | 4-5 |
Thermal performance
| Linear expansion coefficient | 40-400℃ | ×10-5/℃ | 7.2 | 3.7 | 2.8 | 10.5 | 10.8 |
| 40-800℃ | 8.0 | 4.4 | 3.3 | 11.0 | 11.3 |
| Thermal conductivity | W/(m·k) | 32 | 200 | 27 | 3 | 3 |
| Specific heat | J/(kg·k) | 0.78*10 | 0.67*10 | 0.65*10 | 0.46*10 | 0.46*10 |
| Thermal shock resistance (in water) | ℃ | 250 | …… | ＞800 | 300 | 350 |
| Electrical performance | Dielectric strength | V/m | 15*105 | …… | 13*105 | 11*105 | …… |
| Volume resistance(20℃) | Ω·cm | ＞1014 | 108 | 1014 | 1013 | …… |
| Dielectric constant | …… | 9.6 | …… | 9.9 | 33 | …… |
| Loss factor | ×10-4 | 10 | …… | …… | 520 | …… |
Product features
1, cold isostatic pressing
2,Air pressure sintering
3, High compressive strength and flexural strength
4, Low thermal expansion coefficient
5,Excellent thermal shock resistance
6, non-stick aluminum and other non-ferrous metal melt
7, strong corrosion resistance
Applications
Widely used in thermostats, insulating parts, various thermal
equipment, electric appliances, iron structure buildings,
shipbuilding, etc. of various small household appliances.
Ceramic rings can also be used in lasers and industry.
Product Picture
High temperature resistance. At 1200 ℃, the strength and hardness
are almost unchanged. It can be used in a high temperature
environment. It will not melt under high temperature and will not
decompose until 1900 ℃.
.
Product packaging
Packed in carton
FAQ
1. Are you a businessman or a manufacturer?
We are a company, we have our own factory
2. How long is your delivery time?
Negotiable
3. Can the product be customized?
Can be customized
4. What is the product packaging?
Carton or according to customer requirements
