Silicon carbide (SiC) is a synthetic mineral most commonly produced in electrical resistance furnaces, by the Acheson process. In an Acheson furnace, a mixture of carbon material (usually petroleum coke) and a silica or quartz sand is reacted chemically at high temperatures in the range of 1700–2500°C, and finally get SiC. SiC can be produced as either black or green, depending on the quality of the raw materials.The mark of black silicon carbide is usually C, the crystallization is α-SiC, with hexagonal or rhombohedral crystal type, containing SiC around 98%.
It is a material with many excellent properties like high wear resistance, low specific density, an outstanding chemical inertness even at elevated temperatures, high thermal conductivity, low thermal expansion and good shock resistance.
Physical Properties and Chemical Composition
| Elements/Type | SiC | SiO2 | H2O3 | Fe2O3 | F.C | Magnetic Material |
| White fused alumina | 98% min | 1% max | 0.5% max | 0.4% max | 0.4% max | 0.02% max |
| Hardness (Mohs) | 9.2 | |||||
| Melting Point | 2300℃ | |||||
| Working Temperature | 1900℃ | |||||
| Specific Gravity | 3.2-3.45 g/cm3 | |||||
| Bulk Density | 1.2-1.6 g/cm3 | |||||
| Color | Black | |||||
| Elasticity Modulus | 58-65x106psi | |||||
| Grain size | 0-1mm,1-3 mm, 3-5mm, 5-8mm,6/10, 10/18,200-0mesh,325mesh,320mesh,400mesh,600mesh,800mesh,1000mesh, #24,#36,#46,#60,#80,#100,#120,#180,#220,#240...Other special spec. could be supplied as required. |
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Black Silicon Carbide Applications:
Abrasive Tools: Suitable for manufacturing grinding wheels, cutting discs, sandpaper, and blasting media. It is particularly effective for grinding metals, glass, ceramics, and stone.
Refractory Materials: Used as an additive in refractory applications like kiln shelves, bricks, and other products that must withstand extreme temperatures.
Semiconductor and Electronics: Used in high-temperature semiconductors, substrates, and electronic components for its stability and thermal conductivity.
Industrial Ceramics: Enhances strength and durability in advanced ceramics for automotive, aerospace, and precision engineering applications.
Why Choose DOMILL’s Black Silicon Carbide?
With 30+ years of experience, Domill provides high-quality Black Silicon Carbide that meets strict standards for particle consistency and hardness.
Choose DOMILL for reliable, top-quality Black Silicon Carbide that enhances tool performance and longevity.
