Silicon carbide is an inorganic substance with the chemical formula SiCIn nature, there is also a rare silicon carbide mineral called moissanite. Industrially, silicon carbide is divided into black sic and green sic, both of which are hexagonal crystals with a specific gravity of 3.20 to 3.25 and a microhardness of 2840 to 3320kg/mm2.

Green silicon carbide is made of petroleum coke and high-quality silica as the main raw materials, with salt as an additive, and is smelted at high temperature in a resistance furnace. The refined green silicon carbide blocks are crushed, acid-alkali washed, magnetically separated, screened or water-selected to produce products of various sizes.

product-600-450

chemical composition

Size Range	Chemical Composition %
	SIC	F.C	Fe2O3
16#-90#	>98.50	<0.02	<0.60
100#-180#	>98.50	<0.30	<0.80
220#-240#	>98.50	<0.30	<1.20

Size Range	Chemical Composition %
	SIC	F.C	Fe2O3
20#-90#	>99.00	<0.20	<0.20
100#-180#	>98.50	<0.25	<0.50
220#-240#	>98.00	<0.25	<0.70

Uses of green silicon carbide

Used for wear-resistant, fire-resistant and corrosion-resistant materials, and can also be used to make rocket nozzles, gas turbine blades, etc. In addition, green silicon carbide is also one of the ideal materials for solar water heaters on highways and aviation runways.

Functional ceramics, using its thermal conductivity, thermal radiation, and high thermal strength to manufacture thin-plate kiln furniture, which can not only reduce the capacity of kiln furniture, but also improve the kiln capacity and product quality, shorten the production cycle, and is an ideal indirect material for ceramic glaze baking and sintering.

Abrasives and grinding tools, mainly used to make grinding wheels, sandpaper, sanding belts, oilstones, grinding blocks, grinding heads, grinding pastes, and single crystal silicon, polycrystalline silicon in photovoltaic products, and piezoelectric crystals in the electronics industry, etc. grinding and polishing.

Metallurgical mineral processing: Green silicon carbide is second only to diamond in hardness and has high wear resistance. It is an ideal material for wear-resistant pipes, impeller pump chamber cyclones, and hopper linings. Its wear resistance is 5 to 20 times the service life of cast iron and rubber. It is also one of the ideal materials for aviation runways.

Green sic Advantages

High hardness, strong wear resistance, suitable for efficient grinding scenes

The Mohs hardness of green silicon carbide reaches 9.2, second only to diamond, and has outstanding wear resistance. This advantage makes it a core material in the field of abrasives. It can be used to manufacture grinding tools such as grinding wheels, sandpaper, and grinding discs, and is widely used in the grinding of carbide tools, glass products, ceramic parts, and stone plates. For example, in the precision grinding of carbide accessories for automobile engines, it can quickly remove material excess and ensure processing accuracy, greatly improve grinding efficiency and extend the service life of grinding tools.

High temperature resistance, oxidation resistance, support high temperature industrial scenes

Its melting point is about 2700℃, and its chemical and physical properties are stable under high temperature environment, and it has strong oxidation resistance. This feature makes it a high-quality refractory material that can be used in metallurgical high-temperature furnace linings, ceramic sintering kiln tools and other scenes. In the electric arc furnace for steel smelting, refractory bricks made of green silicon carbide can withstand high temperature for a long time and reduce furnace body loss; in the high-temperature sintering kiln in the ceramic industry, its kiln tools can be used repeatedly without deformation and damage.

Excellent thermal and electrical conductivity, enabling electronic and electrical scenarios

It has good thermal conductivity and certain electrical conductivity, and is suitable for electronic heat dissipation and electrical fields. In electronic equipment, it can be used to make chip heat dissipation substrates and LED heat dissipation components, quickly export the heat generated by components when working, and ensure the stable operation of the equipment; in the electrical field, it can be used to manufacture lightning arrester valves, etc., and use its conductive properties to achieve overvoltage protection.

Excellent chemical stability, suitable for corrosion-resistant scenarios

It has strong resistance to corrosive media such as acids and alkalis, and excellent chemical stability. This makes it very useful in the chemical industry, and can produce corrosion-resistant pipes, pump bodies, valves and other equipment for conveying acid and alkali solutions, chemical raw materials and other scenarios. In the corrosive liquid handling system of the pharmaceutical industry, green silicon carbide components can effectively resist the erosion of liquid medicines and extend the service life of the equipment.

High purity and few impurities, meeting high-precision manufacturing scenarios

Usually the purity is above 97%, and the impurity content is extremely low. This advantage enables it to meet scenarios with strict purity requirements such as electronic semiconductors, for example, as a substrate material for semiconductor epitaxial wafers, or for manufacturing high-temperature semiconductor devices, reducing the interference of impurities on device performance and ensuring the stable operation of precision products such as chips.

green silicon carbide