Black Silicon Carbide is produced at a high temperature in an electrical resistance arc furnace with quartz and petroleum coke as it primary raw materials. The final product is sharp and friable with outstanding electrical and thermal conductivity properties. 

Silicon Carbide for LED Sapphire Lapping 

 Advantages: 

(1) Large melting furnace, longer melting time, lead to more crystallization, bigger crystals, higher purity and less impurities.

(2) Good hardness, longer life.

(3) Chemical washed and water washed good cleanness.

(4) Special treated products get higher purity, better toughness, and better grinding effect.