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Nitride-bonded Silicon Carbide
Ultra light and extremely hard
Nitrite-bonded silicon carbide (CarSiK-NG):
NSiC belongs to the porous silicon carbide ceramics with 10 - 15% porosity (< 1% open porosity), which give the material good thermal shock resistance. The silicon nitride matrix additionally protects the material from oxidation and allows it to be used even in air up to 1500 °C. Schunks NSiC is marketed under the brand name CarSiK-NG.
What distinguishes CarSik-NG?
Compared with RSiC, CarSiK-NG is characterized by a smaller pore size, which means significantly higher flexural strength as well as surface resistance without deformation - even over a longer period of use. The material has thus proven itself as a highly resilient and durable kiln furniture up to 1,500 °C. Coupled with Schunk's unique manufacturing expertise, the production of plates up to 1 m x 0.8 m is possible. Thanks to the silicon nitride matrix, products made of CarSiK-NG are poorly wettable by non-ferrous metal melts. This enables use in direct contact with zinc, but also aluminum and tw. copper melts.
Where is CarSIK-NG used?
Due to its high temperature resistance, thermal shock resistance and low density (2.85 g/cm³), CarSiK-NG is predestined for use as a kiln furniture in the oxidative range for firing ceramic products. Especially in sanitary ceramics, but also in technical ceramics, CarSiK-NG is the material of choice for lightweight, long-lasting kiln furniture plates. Its low wettability to metallic melts also allows it to be used as an immersion tube for heating melts by means of gas burners. Due to its low thermal expansion and good strength, CarSiK-NG is also suitable for use in measurement technology, e.g. as a quill.
Special features of CarSIK-NG:
- Density: 2.85 g/cm³
- Thermal conductivity: 12 W/mK
- Flexural strength: 200 MPa
- Modulus of elasticity: 220 GPa
- Application temperature: 1470 °C
- Coefficient of thermal expansion: 4.6 x 10^-6
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