Silicon nitride welding ceramic nozzle
Product Overview
Silicon nitride ceramic is a super hard substance, which has lubricity and wear resistance; it has strong corrosion resistance and oxidation resistance at high temperature. And it can resist the impact of cold and heat. It can be heated to more than 1 000 ℃ in the air, and it will not be broken if it is suddenly cooled and then heated sharply. It is precisely because silicon nitride ceramics have such excellent characteristics that people often use it to manufacture mechanical components such as bearings, gas turbine blades, mechanical seal rings, and permanent molds.
Product parameter table
Performance parameters of silicon nitride ceramics:
Room temperature flexural strength: 800-900Mpa.
Room temperature fracture toughness: 6.0-7.0Mpa.m1/2
Bulk density: 3.20-3.25g/cm3
Room temperature volume resistivity: 1014Ω.cm
Relative electric constant at room temperature: 6-7MHZ.
Thermal conductivity: 20-25W. (M.K)-1
Thermal expansion coefficient: 3.1×10-6/℃
Hardness: HRA 92-94
| 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 advantages
High strength and high impact resistance
Good self-lubricating
Strong alkali resistance
Smooth surface
Good toughness
Applications
- Shipbuilding, bridges, large-scale structural facilities
- Lighting industry
- Electronics and electric heating industry
Product packaging
Packed in carton
In addition to common sizes and specifications, our company accepts drawings and samples for customization. If necessary, please contact our company directly.
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
5. What other products does the company produce?
Welded ceramic nozzles, welded ceramic liners, electronic ceramics, textile ceramics, etc.
Product Tags:
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High hardness of silicon nitride ceramic nozzle at 1900 ℃ Images
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