Silicon Carbide Overview

  • Silicon carbide is an inorganic substance with the chemical formula SiC, which exists in the form of the rare mineral moissanite in nature.
  • In the 1890s, Edward Goodrich Acheson, an American, invented the synthesis process of silicon carbide, which was made by smelting quartz sand, petroleum coke, coal coke and other raw materials in a resistance furnace at high temperature.
  • There are two types of silicon carbide produced in industrial production, black silicon carbide and green silicon carbide, both of which are hexagonal crystals. Generally, green silicon carbide is used as the raw material for silicon carbide technical ceramics.
  • Silicon carbide raw materials are crushed, ground and graded to obtain SiC particles with uniform particle size distribution. Then SiC particles are mixed with sintering additives and temporary adhesive and pressed into blank, which are sintered at high temperatures to form silicon carbide ceramic materials.

Material Performance

  Mechanical properties: high hardness, high strength, high elastic modulus, low friction coefficient.
  Chemical characteristics: strong wear resistance, corrosion resistance, acid and alkali resistance, strong anti-oxidation.
  Thermal features: low coefficient of thermal expansion, high thermal conductivity, high temperature resistance.


Technical ceramics, semiconductor material, refractory material, wear-resistant material, corrosion resistant material, abrasives and grinding tool, metallurgical additives.

Application Fields

Our silicon carbide seal ring is mainly used for mechanical seal industry. Silicon carbide seal ring is the most critical component of mechanical seal as the friction pair material of rotary and stationary ring.
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