Sintered silicon carbide SiC ceramic
SiC sintered ceramic presentation
Our standard SiC sintered ceramic is sense silicon carbide SSiC : Sintered silicon carbide
Pressureless sintered silicon carbide (SSIC) is produced using very fine SiC powder containing sintering additives. It is processed using forming methods typical for other ceramics and sintered at 2,000 to 2,200° C in an inert gas atmosphere. SSIC is distinguished by high strength that stays nearly constant up to very high temperatures (approximately 1,600° C), maintaining that strength over long periods!
This material displays an extremely high corrosion resistance in acidic and basic media, and this too is maintained up to very high temperatures. These properties are outstanding among high-temperature ceramics, and are complemented by high thermal shock resistance, high thermal conductivity, high resistance to wear, and a hardness close to that of diamond.
SiC sintered ceramic main properties
Diverse types are manufactured, depending on the intended purpose, but all are characterised by the typical properties of silicon carbide, such as
- Very high hardness
- Corrosion resistance, even at high temperatures
- High resistance to wear
- High strength, even at high temperatures
- Resistance to oxidation even at very high temperatures
- Good thermal shock resistance
- Low thermal expansion
- Very high thermal conductivity
SiC sintered ceramic applications
SSIC is ideal for extremely demanding applications, for example, slip ring seals in chemical pumps, bearing bushes, high temperature burner nozzles, or as kiln furniture for very high application temperatures. The use of SSIC with graphite inclusions improves the performance of tribological systems.
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