The thermal conductivity of silicon carbide powder
Silicon carbide powder is famous for its high refractory temperature, hardness, and chemical stability. At the same time, the thermal conductivity of silicon carbide is also an important reference index for many related applications. The thermal conductivity of high-purity silicon carbide crystals is 1490 W/M · K. The thermal conductivity of silicon carbide obtained through high-temperature smelting varies with temperature. The higher the temperature, the lower the thermal expansion coefficient. Overall, the thermal conductivity of silicon carbide ranges from 60 to 200 W/M · K. After making silicon carbide ceramics, the thermal conductivity is about 40-220W/M · K. The thermal conductivity of silicon carbide powder is several times that of corundum.
The high thermal conductivity of silicon carbide powder has practical significance in many industrial fields, specifically reflected in the following aspects:
The silicon carbide is made of clay silicon carbide or combined with Fire brick, which can be used for electric furnace lining, heat exchanger and other products.
Silicon carbide powder is an excellent abrasive material to produce grinding wheels or sandpaper. The high thermal conductivity can improve the sharpness of the grinding tool, taking away the heat generated by grinding.
Adding silicon carbide powder to anti-corrosion paint and coatings can improve the heat resistance and UV resistance of the coating.
As an auxiliary material for lubricating oil, silicon carbide powder can reduce the impact of engine heat on the performance of lubricating oil.
Silicon carbide particles（eg.0-1mm，1-2mm）and powders（eg.F240, F1200） are suitable for reaction-bonded or hot-pressed sintered silicon carbide ceramics. It can be used for desulfurization equipment and components in power plants. Silicon carbide ceramic thermal equipment can withstand high temperatures in kilns and has good thermal conductivity.
Overall, silicon carbide powder is one of the super thermal conductive materials. It’s important in many industries.
