Silicon Carbide For Refractory
Refractory Application of Silicon Carbide
SiC is widely used as a high-performance refractory material or as an additive to improve the performance of refractory materials, especially slag resistance and thermal shock stability, due to its advantages such as low thermal expansion coefficient, high thermal conductivity, high temperature strength, good slag resistance, and the ability to form protective oxidation.
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Applications of Silicon Carbide as Refractory Material
Semiconductor
Power components
Filament Pyrometers
Nuclear Fuel
Heat Exchanger
Kiln Furniture Products
Comparison between Silicon Carbide and Other Refractory Materials
Temperature stability: Alumina ceramics are stable at high temperatures, but their stability is slightly inferior to that of silicon carbide under extremely high-temperature conditions.
Thermal conductivity: Silicon carbide has much higher thermal conductivity than aluminium oxide, making it excellent in high-temperature heat transfer and heat dissipation applications.
Wear resistance: Silicon carbide exhibits stronger wear resistance and is suitable for high-wear environments, such as cutting tool manufacturing.
Corrosion resistance: Silicon carbide has relatively better corrosion resistance, especially in strong acid and alkali environments.
Thermal conductivity: In terms of thermal conductivity, silicon carbide still has an advantage and is suitable for high-temperature heat transfer environments.
Preparation difficulty: The preparation of silicon nitride is relatively more complex, while the production cost of silicon carbide is relatively low.
