Is silicon carbide powder conductive?
I saw that many users have this question: Will silicon carbide powder conduct electricity? In order to analyze this problem, I will list the following knowledge for you. In fact, under normal circumstances, the main material of pure silicon carbide powder is sic, which is an atomic crystal and is not conductive. But if the ratio of carbon to silicon is right, it can become a semiconductor. It is a special semiconductor material that still has the performance of a semiconductor even if the temperature is as high as one thousand degrees.
Atomic crystals are semiconductors with good nonlinear conductivity characteristics, and their resistance will decrease with the increase of electric field. The electrical conductivity is different at different temperatures, which is opposite to the resistance temperature characteristics of metals within a certain temperature range. The resistivity of high-purity silicon carbide powder changes with temperature. The relationship between the resistivity of industrial silicon carbide powder and temperature is more complicated. When the temperature is low, the resistance decreases when the temperature rises, and the resistance starts to increase gradually at about 1500°C, and it is close to the resistance at room temperature at 2600°C, and then the resistance tends to increase as the temperature increases. This conductivity has a considerable influence on the smelting process.
At room temperature, silicon carbide micropowder is a kind of semiconductor, the conductivity is between the conductor and the insulator, the resistivity is in the range of 102~1012Ω·cm, and varies with the type and quantity of residual impurities in the crystal.
The conductivity of silicon carbide powder is related to the amount of impurities and temperature. If you don’t understand, you can still consult us.
