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.

Refractory Application of Silicon Carbide

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Applications of Silicon Carbide as Refractory Material

Semiconductor

The third-generation semiconductors represented by silicon carbide have excellent material physical properties, providing greater space for further improving the performance of power electronic devices.

Power components

SiC power components are a new generation of low loss components that can reduce losses and have excellent working characteristics in high-temperature environments.

Filament Pyrometers

Silicon carbide fibers called filaments are used to measure gas temperature in optical technology called filament pyrometers.

Nuclear Fuel

One is for coating fuel particles in high-temperature gas cooled reactors, and the other is for preparing nuclear fuel cladding materials.

Heat Exchanger

Silicon carbide heat exchanger is a new type of heat exchanger that uses silicon carbide ceramic material as the heat transfer medium.

Kiln Furniture Products

Using it as a kiln furniture material can significantly reduce energy consumption and improve the production capacity of kilns, making it widely used in thermal operations of kilns.

Comparison between Silicon Carbide and Other Refractory Materials

Silicon Carbide vs Alumina Ceramics

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.

Silicon Carbide vs Silicon Nitride

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.

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