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Siliconized Silicon Carbide (SiSiC)
Siliconized Silicon Carbide is reaction-bonded, silicon infiltrated silicon carbide (SiSiC) materials. The composition of the green body includes some carbon and the high temperature firing occurs in the presence of an excess of Si. As the molten Si diffuses through the body, it reacts with carbon to form a beta SiC bond and the remaining open porosity is filled with the excess silicon. According to the shape of the item to be delivered, the green body may be formed either by extrusion or by slip casting。
Chemical analysis |
81 % SiC |
88 % SiC |
Maximum use temperature |
1320 °C |
1380 °C |
Density |
3.00 |
3.02 |
Open porosity |
< 0.1 |
< 0.1 |
Bending strength (at 1200°C) |
260 MPa |
300 MPa |
Coefficient of thermal expansion |
4.1 x 10 -6 / K |
4.5 x 10 -6 / K |
Thermal conductivity (at 1200°C) |
40 W / mK |
45 W / mK |
The main application areas for SiSiC are seal rings, sliding bearings, armour, burner nozzles and heat exchangers. The important characteristics of SiSiC are high strength, superior hardness, excellent corrosion resistance and high thermal shock resistance.
Please contact us for more information regarding material properties and discussion of your specific application and service conditions。 |
