Silicon Carbide refractory plates

Silicon carbide products are high-quality refractory materials with the advantages of fine thermal conductivity, high thermal shock stability, high load capacity softening point and very good wear-resisting performance. Silicon carbide (SiC) ceramic kiln furniture, pillars, supports mainly used for sanitary ceramics, hobby ceramics, construction ceramics, electronic ceramics, high-voltage porcelain, grinding wheels and many other similar applications.

sic based kiln furniture sort in following types :

Oxide bonded silicon carbide

Oxide bonded SiC, is manufactured by combining oxide with silicon carbide using silica powder as the main raw material, the reason for using this material is due to their property of exceptional wear, corrosion resistance and has desirable refractory and chemical properties.

Nitride bonded silicon carbide

Advanced nitride-bonded silicon carbide (NSiC) is distinguished from conventional nitride-bonded silicon carbide in that the silicon nitride bond structure is formed in-situ in the slip-cast green body by the reactions that occur during the controlled-atmosphere firing process. This results in a MOR for NSiC that is about 50% higher. NSiC is also porous, but oxidation can be inhibited by re-firing in air, which forms a silica layer and closes the surface pores. NSiC has the lowest thermal conductivity of the advanced SiC materials, and is therefore more sensitive to thermal shock in fast-firing applications. Its maximum use temperature is 1450C.

SiC plate applications

The kiln furnitures component are used in sanitaryware and porcelain production heat processing, to carry various part and ceramic Items. Which must therefore have acceptable mechanical strength. they must also ensure that the parts do not deform or stick to each other.

SiC produce Process

SiC is produced synthetically in electrical resistance furnaces, using the Acheson process invented in 1891.

SiC Properties

Silicon carbide (SiC) is a highly stable and very hard abrasive with excellent thermal shock resistance. Harder even than aluminum oxide, silicon carbide is the hardest common abrasive grain, measuring 9.5 on the Mohs scale of hardness, very close to that of diamond. As a blasting media, it has a very fast cutting speed, also benefiting from a high degree of recyclability. Its long-lasting nature means it is well suited for use on harder materials, rougher surfaces and for wet polishing, due to its friability, hardness and sharpness. It is ideal for hard metals, glass, stones, and marble.