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| Categories | Silicon Nitride Ceramic |
|---|---|
| Brand Name: | KEGU |
| Place of Origin: | China |
| Price: | 200-500 yuan/kg |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability: | 2,000 pcs/month |
| Packaging Details: | Strong wooden box for Global shipping |
| Model Number: | Customizable |
| Material: | Silicon Nitride |
| Composition:SiC: | ＞85% |
| Color: | Black |
| Density: | 3.20-3.26g/cm3 |
| Max. Service Temp: | 1450℃ |
| Flexural Strength: | 250MPa |
| Sample: | Customizable |
| Chemical Stability: | High |
| Apparent Porosity: | 0-0.1% |
| Elastic Modulus: | 300-320GPa |
| Compression Strength: | >1500MPa |
| Vickers Hardness(HV0.5): | 15-16GPa |
| Thermal Conductivity: | 20-25W/(m.k) |
| Specific Resistivity: | 10^14Ω·cm |
| Company Info. |
| Shaanxi KeGu New Material Technology Co., Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
Product Description
Our high-performance silicon nitride ceramic materials are engineered specifically for the aluminum industry, delivering superior thermal and mechanical properties compared to traditional alternatives. This innovation enables groundbreaking products like the L-shaped high thermal conductivity submerged heating appliance, setting a new standard for efficiency and durability in aluminum processing equipment.
We utilize a pioneering slip-casting formation process to manufacture silicon nitride pouring spoons and crucibles. This method maximizes the inherent advantages of silicon nitride, offering:
Ultimate Thermal Shock Resistance (ΔT 400–500°C)
Superior Non-Stick Aluminum Properties
Excellent Corrosion & Wear Resistance
These products represent the definitive solution for aluminum melt handling, significantly extending service life compared to spoons and crucibles made from other ceramic materials.
Silicon Nitride Ceramics: Technical Property Comparison
Category | Property | Unit | 99% Al₂O₃ | S-SiC | ZrO₂ | Si₃N₄ |
Physical | Density | g/cm³ | 3.9 | 3.1 | 6.0 | 3.2 |
Water Absorption | % | 0 | 0.1 | 0 | 0.1 | |
Sintering Temperature | °C | 1700 | 2200 | 1500 | 1800 | |
Mechanical | Hardness (HV) | HV | 1700 | 2200 | 1300 | 1400 |
Flexural Strength | MPa (kgf/mm²) | ~343 (3500) | ~392 (4000) | ~882 (9000) | ~686 (7000) | |
Compressive Strength | MPa (kgf/mm²) | ~2942 (30000) | ~1961 (20000) | ~1961 (20000) | ~2255 (23000) | |
Thermal | Max Working Temperature | °C | 1500 | 1600 | 1300 | 1400 |
Thermal Expansion Coefficient (0-1000°C) | 10⁻⁶/°C | 8.0 | 4.1 (0-500°C) | 9.5 | 2.0 (0-500°C) | |
5.2 (500-1000°C) | 4.0 (500-1000°C) | |||||
Thermal Shock Resistance | ΔT (°C) | 200 | 250 | 300 | 400-500 | |
Thermal Conductivity (25°C) | W/m·K | 31 | 100 | 3 | 25 | |
Thermal Conductivity (300°C) | W/m·K | 16 | 100 | 3 | 25 | |
Electrical | Volume Resistivity (20°C) | Ω·cm | >10¹² | 10⁶–10⁸ | >10¹⁰ | >10¹¹ |
Volume Resistivity (100°C) | Ω·cm | 10¹²–10¹³ | – | – | >10¹¹ | |
Volume Resistivity (300°C) | Ω·cm | >10¹² | – | – | >10¹¹ | |
Dielectric Strength | kV/mm | 18 | Semiconductor | 9 | 17.7 | |
Dielectric Constant (1 MHz) | ε | 10 | – | 29 | 7 | |
Dielectric Loss Tangent | tan δ | 0.4 × 10⁻³ | – | – | – |
Why Choose Our Silicon Nitride Pouring Spoons & Crucibles?
Longer Service Life: Exceptional durability reduces replacement frequency and downtime.
Improved Efficiency: Excellent non-wetting properties minimize aluminum adhesion and material loss.
Enhanced Reliability: Unmatched thermal shock resistance prevents cracking during rapid temperature changes.
High-Temperature Stability: Maintains structural integrity in demanding aluminum processing environments.
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