silcarb manufactures Recrystallized Silicon Carbide (RSIC) at temperatures of 2600 degrees c.These parts are manufactured using the slip casting process, extrusion processes and iso-static pressing.
Silcarb specializes in Recrystallized Silicon Carbide manufacturing in its Bangalore plant. RSIC uses highly pure silicon carbide materials. They are produced by evaporation- coagulation and fired under high-temperature 2400℃ to get a highly pure ceramic with porous network structure. This material has an open porosity of approximately 11% to 15%, the grain size of approximately 100 pm, shrinkage behaviour at firing (no shrinkage occurs), and applications (kiln construction). So, due to the presence of porosity RSIC is weaker when compared to the dense SiC ceramics. The properties of RSIC differ from those of cordierite and other silicon-bonded materials.
This material features high strength, high-temperature resistance, ground resistance, abrasion and corrosion resistance, oxidation resistance, good thermal shock resistance, high thermal conductivity, good heat transfer effect. These products are self-bonded, we start with nanopowders of Beta Silicon Carbide and transform (Recrystallise) them into Self-bonded Alpha Silicon Carbide. These are particularly designed for low mass kiln furniture applications. It exhibits tremendous hot strength and oxidation resistance. Therefore, RSIC parts and made with thin walls, which leads to more economic firing. It also ensures long life in the most difficult of application environments.
As there is no bonding material and the product is almost pure silicon carbide the application temperatures are as high as 1650°C with high thermal cycling possible.
Good thermal shock resistance can take rapid thermal cycling. Good oxidation resistance. Can work at elevated temperatures. The service life is long.
| ITEM | UNIT | INDEX |
|---|---|---|
| Working temperature | ℃ | 1650 |
| Volume Density | g / cm³ | 2.95 grms/cc |
| Porosity | % | 15 |
| Compressive strength | MPa | ≥500 |
| Bending strength | MPa | 90-120 |
| Thermal Conductivity | W / m·k | 24 |
| Coefficient of thermal expansion (20-1000℃) | 10-6K-1 | 4.8 |
| a-sic | % | 98.5 |
| Refractoriness | ℃ | ≥1900 |
We can make rollers, beams up to a length of 4000mm in our existing re crystallization furnaces. We use multiple shapes forming techniques including cold high-pressure vacuum extrusion, isostatic pressing, etc
Recrystallized Silicon Carbide (RSIC) Kiln Furniture is used in high-temperature kiln constructions where low mass, high thermal conductivity, excellent oxidation resistance, and dimensional stability are required. RSIC components are particularly suited for applications involving rapid thermal cycling and operating temperatures up to 1650°C, especially where thin-wall kiln furniture improves firing efficiency and furnace productivity.
