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2024
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05
What are the application areas of silicon carbide?
Author:
In roller‑kilns, tunnel kilns, and shuttle kilns used in industries such as high‑end daily‑use ceramics, sanitary ware, high‑voltage electrical porcelain, and glass, silicon carbide ceramics are typically selected as refractory materials for high‑temperature applications. For example, silicon carbide beams are well suited for load‑bearing structures in industrial kilns, exhibiting excellent high‑temperature mechanical properties, superior resistance to high‑temperature creep, and maintaining dimensional stability over long service life without bending or deformation. Silicon carbide roller bars, employed in the high‑temperature firing zone, offer outstanding thermal conductivity, helping to reduce energy consumption without increasing the weight of the kiln car. Meanwhile, silicon carbide cold‑air ducts, utilized in the cooling zone, demonstrate exceptional resistance to rapid thermal cycling, with a service life 5 to 10 times that of stainless steel pipes or other refractory materials such as alumina.
In roller‑kilns, tunnel kilns, and shuttle kilns used in industries such as high‑end daily‑use ceramics, sanitary ware, high‑voltage electrical porcelain, and glass, silicon carbide ceramics are typically selected as refractory materials for high‑temperature applications. For example, silicon carbide beams are well suited for load‑bearing structures in industrial kilns, exhibiting excellent high‑temperature mechanical properties, superior resistance to high‑temperature creep, and maintaining dimensional stability over long service life without bending or deformation. Silicon carbide roller bars, employed in the high‑temperature firing zone, offer outstanding thermal conductivity, helping to reduce energy consumption without increasing the weight of the kiln car. Meanwhile, silicon carbide cold‑air ducts, used in the cooling zone, demonstrate excellent resistance to rapid thermal cycling, with a service life 5 to 10 times that of stainless steel or alumina‑based refractories.
Silicon carbide, with a hardness second only to diamond and hexagonal boron nitride, is a widely used abrasive. Owing to its extreme hardness, it can be formulated into various grinding wheels, abrasive cloths, sandpaper, and other abrasives, finding extensive application in the machining industry. Silicon carbide is primarily classified into two types: black silicon carbide and green silicon carbide. Black silicon carbide, which is relatively softer than green silicon carbide, is employed for grinding materials of lower hardness, such as cast iron and non‑metallic substances; green silicon carbide, on the other hand, is well suited for grinding cemented carbides, optical glass, titanium alloys, and similar materials. Additionally, cubic silicon carbide is specifically designed for the ultra‑precision finishing of miniature bearings.
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