Key Benefits of NBSiC
- Outlasts alternative materials (e.g. graphite and refractory metals)
- Retains high dimensional stability over time
- Suitable for complex geometries
Material Description and Applications
Saint-Gobain's Cast Refrax® Silicon Nitride-Bonded Silicon Carbide (NBSiC) provides a high-performance solution for demanding industrial applications. This advanced refractory material excels in high-wear areas, reducing downtime with superior erosion resistance and thermal shock stability. Cast Refrax's dimensional stability and ability to maintain complex geometrical shapes ensure consistent performance under extreme conditions. Its exceptional mechanical strength and chemical inertness make it ideal for applications such as launders and degassing rotors, enhancing productivity and longevity in various high-temperature processes.
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Discover the versatility of Cast Refrax® Silicon Nitride Bonded Silicon Carbide (NBSiC).
FAQ
How does reaction-bonded silicon carbide differ from direct sintered SiC?
Reaction-bonded silicon carbide (RBSC) differs from direct sintered silicon carbide (SSiC) in its manufacturing process and properties. RBSC is produced by infiltrating molten silicon into a porous silicon carbide body, resulting in a composite with silicon nitride bonding phases. This gives RBSC excellent thermal shock resistance and moderate strength. In contrast, SSiC is made by directly sintering silicon carbide powder, resulting in a denser and more uniform structure, providing higher mechanical strength and hardness but lower thermal shock resistance than RBSC.
What is nitride bonded silicon carbide?
Nitride-bonded silicon carbide (NBSiC) is a composite material where silicon carbide (SiC) grains are held together using a silicon nitride (Si3N4) binder phase. This combination provides excellent thermal shock resistance, high mechanical strength, and outstanding durability in high-temperature and corrosive environments.
Where is NBSiC used?
Nitride-bonded silicon carbide (NBSiC) is used in various high-temperature and high-wear applications which benefit from its exceptional durability and thermal shock resistance. It is commonly employed in kiln furniture, refractory bricks, and components for industrial furnaces. NBSiC is also ideal for use in launders, degassing rotors, and other equipment exposed to harsh environments in metal processing, ceramics, and glass manufacturing industries.
