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ROCAR - Model SiC/SiSiC/SSiC -Silicon Carbide - Industrial Ceramic Material
ROCAR silicon carbide, developed by CeramTec, is renowned for its exceptional hardness and thermal properties, akin to that of a diamond. This material, the hardest, yet lightest of ceramics, possesses remarkable thermal conductivity, coupled with low thermal expansion, making it an ideal choice for applications within harsh environments. Particularly utilized in forms like sintered silicon carbide (SSiC) and silicon infiltrated silicon carbide (SiSiC), it can withstand temperatures surpassing 1,400°C while maintaining its properties. With a Young's modulus greater than 400 GPa, it ensures significant dimensional stability crucial for constructing durable components. Given its resistance to corrosion, abrasion, and erosion, this material excels in demanding conditions, extending its application to chemical, food, turbine, and heating industries. Additionally, in comparison to metal, ROCAR® silicon carbide offers a cost-effective solution with extended service life, suitable even for 3D printing and ballistic applications.
Silicon carbide behaves almost like a diamond. It is not only the lightest, but also the hardest ceramic material and has excellent thermal conductivity, low thermal expansion and is very resistant to acids and lyes. The variants SSiC (sintered silicon carbide) and SiSiC (silicon infiltrated silicon carbide) have established themselves. The latter is particularly suitable for the production of complex large-volume components. ROCAR® silicon carbide is used in numerous applications.
With silicon carbide ceramics the material properties remain constant up to temperatures above 1,400°C. The high Young’s modulus > 400 GPa ensures excellent dimensional stability. These material properties make silicon carbide predestined for use as a construction material. Silicon carbide masters corrosion, abrasion and erosion as skillfully as it stands up to frictional wear. Components are used in chemical plants, mills, expanders and extruders or as nozzles, for example.
- Low density (3.07 to 3.15 g/cm3)
- High hardness (HV10 ≥ 22 GPa)
- High Young’s modulus (380 to 430 MPa)
- High thermal conductivity (120 to 200 W/mK)
- Low coefficient of linear expansion (3.6 to 4.1x10-6/K at 20 to 400°C)
- Maximum operating temperature of SSiC under inert gas: 1,800°C
- Excellent thermal shock resistance of SiSiC: ΔT 1,100 K
- Erodible
- Corrosion and wear resistant even at high temperatures
- Toxicologically safe
- Good gliding properties