Silicon Nitride Bonded Silicon Carbide (Si₃N₄-SiC) with Exceptional Wear Resistance, Superior Corrosion Resistance, and Excellent Thermal Shock Resistance
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
Negotiable
Product Description
In harsh industrial settings characterized by high temperatures, corrosion, abrasion, and severe thermal shock, conventional materials often fail rapidly, leading to reduced productivity and soaring maintenance costs. Silicon Nitride Bonded Silicon Carbide (Si₃N₄-SiC) products are advanced material solutions engineered to conquer these extreme challenges.
Core Material Advantages
The superior performance of our products begins with the selection and optimization of core raw materials. We use self-produced large-crystal black silicon carbide as the premium base material, creating a composite ceramic material that combines high strength with excellent chemical stability.
- Exceptional Wear Resistance: Abrasion resistance is 3.13 times that of traditional wear-resistant steel (e.g., Cr15Mo3), while its weight is only one-third, significantly reducing equipment load and extending service life.
- Superior Corrosion Resistance: Demonstrates extreme stability in aggressive chemical environments (strong acids, alkalis), with far lower mass loss due to corrosion compared to ordinary silicon carbide and alumina ceramics.
- Excellent Thermal Shock Resistance: Very low coefficient of thermal expansion combined with a suitable elastic modulus ensures the products can withstand severe thermal cycling without cracking.
Performance Parameters
Through stringent production process control, we ensure product performance meets and exceeds industry standards. Categorized into three main types based on form and application needs:
| Performance Parameter | Refractory Brick Products | Kiln Furniture Products | Custom-Shaped Products |
|---|---|---|---|
| Apparent Porosity (%) | ≤ 16 | ≤ 16 | ≤ 14 |
| Bulk Density (g/cm³) | ≥ 2.65 | ≥ 2.65 | ≥ 2.68 |
| Cold Crushing Strength (MPa) | ≥ 160 | ≥ 170 | ≥ 180 |
| Cold Modulus of Rupture (MPa) | ≥ 45 | ≥ 45 | ≥ 50 |
| Hot Modulus of Rupture (1400°C, MPa) | ≥ 20 | ≥ 20 | ≥ 20 |
| Refractoriness Under Load (0.2MPa, °C) | ≥ 1500 | ≥ 1600 | ≥ 1700 |
| Maximum Service Temperature (°C) | 1550 | 1600 | 1550 |
All product series feature excellent thermal conductivity (≥16 W/m·K) and a very low coefficient of thermal expansion (≤4.18*10⁻⁶/°C at 1000°C), ensuring efficient heat transfer and dimensional stability.
Corrosion Resistance Verification
In the realm of chemical corrosion, our Si₃N₄-SiC material demonstrates dominant performance. The following comparison of mass loss under standard test conditions reveals its unparalleled corrosion resistance:
| Test Solution (Concentration) | Temperature | Si₃N₄-SiC | Comparative Material: SiC | Comparative Material: Al₂O₃ |
|---|---|---|---|---|
| 98% Concentrated Sulfuric Acid | 100°C | < 0.2 g/m² | > 100 g/m² | 65.0 g/m² |
| 70% Nitric Acid | 100°C | < 0.2 g/m² | > 100 g/m² | 70.0 g/m² |
| 25% Potassium Hydroxide | 100°C | < 0.2 g/m² | > 100 g/m² | 60.0 g/m² |
| 53% Hydrofluoric Acid | 25°C | 0.2 g/m² | 8.5 g/m² | 55.0 g/m² |
| 10% HF + 57% HNO₃ | 25°C | < 0.2 g/m² | > 100 g/m² | 72.0 g/m² |
Flexible Customization & Applications
We not only supply standard specification products but also specialize in developing and manufacturing custom-shaped products with complex geometries and stringent performance requirements based on specific customer operating conditions.
Key Application Areas:
- Non-Ferrous Metal Smelting: Electrolytic aluminum cell linings, furnace components for melting
- High-Temperature Industrial Kilns: Kiln furniture (shelves, rollers), furnace linings, burners
- Power & Metallurgy: Circulating Fluidized Bed (CFB) boiler linings, submerged arc furnace parts
- Wear & Conveyance Systems: Lining plates, nozzles, cyclones for powder processing equipment
- Chemical & Environmental Protection: Structural parts, sealing components in highly corrosive environments
Choosing our Silicon Nitride Bonded Silicon Carbide products means more than selecting a material; it means opting for higher productivity, lower total cost of ownership, and more reliable production assurance. Contact us today to explore the optimal material solution for your specific application.
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Company
Shaanxi KeGu New Material Technology Co., Ltd
Location
5# Chaoyang Road,Weicheng Sub-district，Qinhan New City, Xixian New Area, Xi'an Shaanxi Province,China,712039
Contact Person
Yuki