Silicon carbide powders is the main material for manufacturing silicon carbide ceramics, including black silicon carbide and green silicon carbide. Black silicon carbide is made of quartz sand, petroleum coke and wood chips as the main raw materials, smelted at high temperature in a resistance furnace. Its hardness is between corundum and diamond, mechanical strength is higher than corundum, brittle and sharp. Black, translucent, hexagonal crystal shape, its silicon carbide content is slightly lower than green, physical properties and green silicon carbide is similar, but the toughness is better than green. Green silicon carbide is based on petroleum coke and high-quality silica as the main raw material, add salt as an additive, through the high-temperature smelting of resistance furnace, smelted into the high purity of crystals, hardness, mechanical strength is higher than corundum. Green, semi-transparent, hexagonal crystal shape, its silicon carbide content is higher than the black, physical properties and black silicon carbide is similar, but the performance is slightly brittle than the black. Black silicon carbide and green silicon carbide have good thermal conductivity and semiconductor properties, are commonly used silicon carbide powders.Also please note that silicon carbide powders can be made according to your requirement.