Green Silicon Carbide

Green Silicon Carbide Introduction:

Green Silicon Carbide (SiC) is an artificial corundum produced through the fusion of Quartz Sand (mainly composed of silica SiO2), Petroleum Coke, and NaCl (catalyst) in an electric resistance furnace. Among abrasive materials, silicon carbide surpasses corundum in hardness and ranks below diamond, cubic boron nitride, and boron carbide. It exhibits a density typically ranging from 3.20 to 3.25g/cm3, with a bulk density of 1.2-1.6g/cm3. Semi-transparent in a green hue, it possesses a crystalline structure, high hardness, sharpness, strong cutting ability, stable chemical characteristics, and good thermal conductivity.

The combination of hardness and sharpness makes it an exceptionally aggressive material, especially suitable for applications requiring high purity. Silicon carbide is extensively utilized in the production of grinding wheels, lapping materials, and refractory raw materials. Green Silicon Carbide Abrasive Grits (Green SiC Abrasives) adhere to the FEPA/JIS/ANSI standards.

Green Silicon Carbide Typical Chemical Analysis: 

Silicon Carbide	99%
Free Silicon   (Si)	0.60%
Free Silica   (SiO2)	0.60%
Iron (Fe)	0.10%
Free Carbon(C)	0.30%

Green Silicon Carbide Physical Properties:

Crystal Form	Alpha-SiC hexagonal system
Reaction with acids	Very slight surface action with hydrofluoric acid
Oxidation-reduction effects	Start to oxide slowly at 800°C. No reduction
True Density   (g/cm3)	3.20-3.25
Hardness	Knoop (kg/cm2)	2500-2900
	Moh’s	9.5
Color	Green
Color after firing	Green
Decomposition point	2600°C
Max Usable temperature	1900°C in air

Green Silicon Carbide Applications:

1. Abrasives Manufacturing:
   • Green SiC is widely used in the production of abrasive tools such as grinding wheels, cutting wheels, and abrasive papers. Its high hardness and sharpness make it effective for precision grinding and cutting applications.
2. Lapping and Polishing:
   • The abrasive nature of green silicon carbide makes it suitable for lapping and polishing applications. It is employed to achieve smooth surfaces and precise dimensions in the manufacturing of optics, ceramics, and semiconductor materials.
3. Refractory Industry:
   • Green SiC is utilized in the production of refractory materials, which are resistant to high temperatures and harsh conditions. It enhances the strength and thermal stability of refractory products used in furnaces, kilns, and other high-temperature applications.
4. Metallurgical Industry:
   • In the metallurgical industry, green silicon carbide is used for deoxidation and desulfurization processes. It helps improve the quality of metal alloys by removing impurities.
5. Coating Materials:
   • Green silicon carbide is used in the production of coated abrasives, where it is applied as a coating on various materials to improve their cutting and grinding capabilities.
6. Ceramics and Advanced Materials:
   • It is used as a raw material in the production of advanced ceramic materials and composites due to its high temperature resistance and mechanical strength.
7. Foundry Industry:
   • Green SiC is used in foundries for casting and molding processes. It can be incorporated into sandblasting materials for surface preparation in metal casting.

Green Silicon Carbide Available Grain：
Macrogrit Sizes P12 to P220
Macrogrit Sizes F12 to F220
segments 0-1mm, 1-3mm, 3-5mm, 5-8mm, etc.

Black Silicon Carbide Packaging:
1M/T woven bag or 25kg woven bag/paper bag.
Packaging can be OEM customized.