The material is by pressureless sintering high-performance sub-micron SiC powder and dense SiC ceramic products, excluding free silicon and tiny grains, high temperature resistance, high strength, high hardness, high corrosion resistance, oxidation resistance and other excellent performance, is the international and domestic manufacturing mechanical seal ring, blast nozzle, and magnetic drive pump, shield pump body armor components preferred common material, especially suitable for the transmission of strong acid, strong alkali corrosive medium, such as the conditions of use.
Silicon Carbide (SiC) physical property | ||||||
Technical parameter | Unit | RBSiC | SSiC | SiC+C | SSiC+C | QSSiC+C |
Content of Sic | % | ≥90 | ≥98 | ≥85 | ≥92 | ≥90 |
Free Si | % | ≤10 | ≤1 | ≤12 | / | / |
Elastic Modulus | GPa | ≥400 | ≥410 | ≥350 | ≥360 | ≥180 |
Temperature | °C | 1300 | 1400 | 1300 | 1400 | 1400 |
Hardness | HS | 110 | 115 | ≥105 | ≥110 | ≥100 |
Porosity Rate | % | <0.3 | <0.2 | <0.5 | <0.5 | <5 |
Density | g/cm3 | 3.00~3.05 | >3.10 | 2.69-2.90 | 2.70-3.0 | 2.65 |
Compressive Strength | MPa | >2200 | >2500 | >1400 | >1600 | >800 |
Fractural Strength | MPa | >350 | >380 | >150 | >160 | >100 |
Coefficient of Heat Expansion | 10-6/°C | 4 | 4.2 | 3.50 | 3.00 | 2.50 |
