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.

Recently, the research team of the Laboratory of Precision Optical Manufacturing and Testing Center of Shanghai Institute of Optics and Precision Machinery, Chinese Academy of Sciences, has made progress in the research on improving polishing efficiency by femtosecond laser modification of silicon carbide surface.

Black silicon carbide 16 # refers to the material made by high-temperature reaction of silica sand and Petroleum coke material. During production, the black abrasive with a particle size of 16 meshes (that is, a diameter of about 1.18mm) is obtained after screening.

Black silicon carbide and black aluminum oxide abrasive grit are both hard materials. They are both good abrasive materials in the grinding and polishing industry. But there are differences in their chemical composition and physical properties and so on. Another name for black silicon carbide is black carborundum.  And another name for black aluminum oxide is black corundum.  They are both Synthetic black emery.

In the past month, the silicon carbide price fluctuates to more extent.  Silicon carbide manufacturers quote low prices in May 2023.