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{"title":"Silicon Nitride Pouring Spoon and Crucible with Ultimate Thermal Shock","imgUrl":"https:\/\/img.chinax.com\/nimg\/f7\/be\/f20468adce41fff6ac66a57916be-200x200-1\/silicon_nitride_pouring_spoon_and_crucible_with_ultimate_thermal_shock_resistance_and_superior_non_stick_aluminum_properties_for_t.jpg","attrs":{"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"}}
{"title":"Black High Thermal Shock Resistance Customizable Silicon Nitride Ceramic for Non","imgUrl":"https:\/\/img.chinax.com\/nimg\/b9\/c2\/81e787189b6a8899dc6bb09fcffe-200x200-1\/black_high_thermal_shock_resistance_customizable_silicon_nitride_ceramic_for_non_standard_structural_parts.jpg","attrs":{"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"}}
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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
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.
