Black Silicon Carbide – Introduction
Black silicon carbide (Black SiC, chemical formula SiC) is a high-performance synthetic ceramic abrasive and refractory material, produced by fusing quartz sand and petroleum coke in a resistance furnace at approximately 2200 °C .
1.Black Silicon Carbide Basic Properties
| TYPICAL CHEMICAL ANALYSIS | TYPICAL PHISICAL PROPERTIES | ||
| SiC | ≥98% | Hardness: | Mohs:9.15 |
| SiO2 | ≤1% | Melting Point: | Sublimes at 2250 ℃ |
| H2O3 | ≤0.5% | Maximum service temperature: | 1900℃ |
| Fe2O3 | ≤0.3% | Specific Gravity: | 3.2-3.45 g/cm3 |
| F.C | ≤0.3% | Bulk density(LPD): | 1.2-1.6 g/cm3 |
| Magnetic content | ≤0.02% | Color: | Black |
| Particle shape: | Hexagonal | ||
2.Black Silicon Carbide Main Advantages
- Extremely wear‑resistant
- High temperature stability
- Resistant to corrosion, molten slag, and metal attack
- Good thermal conductivity and electrical conductivity
- Cost-effective compared to green silicon carbide
3. Typical Applications
(1) Refractory & High‑Temperature Furnace Materials
- High‑temperature furnace linings
- Iron and steel trough castables
- Ladle, furnace, and kiln refractories
- Ceramic kiln furniture, saggar, setter plates
(2) Abrasives & Grinding
- Grinding wheels, sandblasting media
- Lapping and polishing hard metals, cast iron, stone, glass
(3) Other Industrial Uses
- Wear‑resistant coatings
- Ceramic reinforcement
- Deoxidizer and additive in metallurgy
- High‑temperature structural components