Black silicon carbide (SiC) is a compound formed by chemical bonds between silicon and carbon elements. It presents black or dark gray particles, has a hard texture and high wear resistance. It is usually a hexagonal crystal system with excellent thermal and chemical stability.

Black silicon carbide

chemical composition

Model	Chemical Composition %
Model	SiC	Free Carbon	Fe2O3
SiC 98	98 min	0.2 max	0.60 max
SiC 97	97.0 min	0.3 max	1.20 max
SiC 90	90.0 min	1.0 max	1.20 max
SiC 88	88.0 min	4.0 max	1.5 max
Model-SiC Briquette	SiC	Al2O3	Fe2O3
SiC Briquette 70	70.0 min	5.0 max	3.0 max
SiC Briquette 65	65.0 min	5.0 max	3.0 max

Black silicon carbide plays an important role in the metallurgical industry

Deoxidizer

Function: In the process of steel smelting, black silicon carbide is used as a deoxidizer to reduce the oxygen content by reacting with oxygen in molten steel, thereby improving the strength and toughness of steel.

Advantages: Compared with traditional deoxidizers (such as aluminum and magnesium), black silicon carbide provides a more stable deoxidation effect and can reduce the contamination of molten metal.

Refractory materials

Use: Used to manufacture various refractory bricks and refractory materials that can withstand high temperatures and corrosive environments.

Features: Black silicon carbide has good thermal stability and oxidation resistance, and is suitable for lining equipment such as smelting furnaces and heating furnaces.

Abrasives

Application: As an abrasive for tools such as sandpaper and grinding wheels, it is suitable for processing metal and non-metal materials.

Advantages: It has high hardness and high grinding efficiency, can quickly remove the surface of the material and improve production efficiency.

Sandblasting media

Function: Used to clean the metal surface and remove the oxide layer and dirt in the sandblasting process.

Effect: Black silicon carbide particles are hard and not easy to break, which can effectively improve the efficiency and effect of sandblasting.

Casting

Function: Used as a filling material for the mold during the casting process to increase the strength and wear resistance of the casting.

Effect: It helps to improve the surface quality and physical properties of the casting.

High-temperature structural materials

Features: In certain high-temperature environments, black silicon carbide can be used as a structural material to ensure the stability and safety of equipment under extreme conditions.

Application: Widely used in the manufacture of smelting and chemical equipment, and can withstand high temperatures and highly corrosive media.

Black silicon carbide