Description
Our factory specializes in supplying high-quality silicon carbide bricks, which are top-grade refractory materials made primarily from SiC as the main raw ingredient. These bricks exhibit a range of exceptional properties, including high strength at both room and high temperatures, excellent thermal conductivity, minimal linear expansion coefficient, impressive thermal shock resistance, outstanding high-temperature abrasion resistance, and robust chemical corrosion resistance. Due to these superior qualities, silicon carbide bricks find widespread applications in various industries such as iron and steel, colored metallurgy, chemistry, electricity, ceramics, and aerospace.
Silicon carbide bricks can be categorized based on their bonding mode, which includes oxide bonding (such as clay bonding, mullite bonding, and SiO2 bonding), nitride bonding (like Si3N4 bonding and Sialon bonding), self-bonding (such as β-SiC bonded and recrystallized silicon carbide), and siliconized reaction sintered silicon carbide bricks.
| Item | Bonding Type | |||||||
| Clay | Mullite | SiO2 | Si3N4 | Sialon | β-SiC | R-SiC | Siliconizing reaction | |
| SiC % | ＞85 | ＞70 | ≥90 | ≥72 | ≥71 | ≥94 | ≥99 | ≥80 |
| Si3N4 % | / | / | / | ≥20 | / | / | / | / |
| Al2O3 % | / | / | / | / | ≥5 | / | / | / |
| Si % | / | / | / | / | ≥5.5（N） | / | / | 12~18 |
| Bulk Density g/cm3 | 2.5~2.6 | 2.55~2.65 | 2.6~2.7 | ≥2.65 | ≥2.65 | ≥2.63 | ≥2.65 | ≥3.0 |
| Apparent porosity % | ≤20 | ≤16 | ≤15 | ≤16 | ≤16 | ≤17 | ≤15 | ≤0.5 |
| Flexural strength at room temperature MPa | ≥20 | ≥25 | ≥25 | ≥45 | ≥45 | ≥30 | ≥90 | ≥220 |
| Flexural strength at high temperature MPa 1400℃ | / | / | / | ≥45 | ≥45 | ≥30 | ≥90 | ≥240 |
| Cold Crushing strength MPa | ≥100 | ≥100 | ≥120 | ≥160 | ≥150 | ≥140 | ≥300 | ≥800 |
