Black silicon carbide is made of quartz sand, petroleum coke and silica as the main raw material, through the resistance furnace high temperature smelting. Its hardness is between corundum and diamond, mechanical strength is higher than corundum, brittle and sharp.
What are the properties of black silicon carbide provided by black silicon carbide manufacturers? Let’s learn more about it with Henan Superior Abrasive.
Black silicon carbide advantages
Black silicon carbide, with metallic luster, contains more than 95% SiC, with greater strength than green silicon carbide, but lower hardness, mainly used for grinding cast iron and non-metallic materials.
Molecular formula is SiC, its hardness is between corundum and diamond, mechanical strength is higher than corundum, can be used as abrasives and certain other industrial materials. Industrial silicon carbide was successfully developed in 1891 and is an early man-made abrasive. Although a small amount of silicon carbide exists in meteorites and the earth’s crust, no mining source has been found to date.
Black silicon carbide contains about 98.5% SiC, its toughness is higher than that of green silicon carbide, and is mostly used for processing materials with low tensile strength, such as glass, ceramics, stone, refractory materials, cast iron and non-ferrous metals.
Silicon carbide advantages
Due to its stable chemical properties, high thermal conductivity, low coefficient of thermal expansion and good wear resistance, silicon carbide is used as an abrasive, but also has many other uses, for example: a special process to silicon carbide powder coated in the impeller of a hydraulic turbine or the inner wall of the cylinder body, which can improve its wear resistance and extend the service life of 1 to 2 times; used to make refractory materials, heat shock, small size, light weight and high strength, good energy-saving effect. Low-grade silicon carbide (containing about 85% SiC) is a better deoxidizer, which can accelerate the speed of steelmaking, and facilitate the control of chemical composition, improve the quality of steel. In addition, silicon carbide is also used in large quantities to make electric heating elements silicon carbon rods.
Silicon carbide is very hard, has excellent thermal conductivity, is a semiconductor, and can resist oxidation at high temperatures.
Black silicon carbide manufacturers
HSA is a leading manufacturer of silicon carbide in China, we have more than 20 years experience in producing silicon carbide, Silica Fume, our products have been exported to more than 100 countries such as USA, Canada, Spain, South Africa, etc. We have maintained close contact and strategic cooperation with many famous multinational companies.
If you have any demand for silicon carbide or Silica Fume, welcome to contact us.