Silicon Carbide

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Used primarily in alkaline glazes for local reduction to produce copper red glazes. Ground to 400 mesh. Silicon Carbide powder has some curious uses in ceramic glazes and can be used to make crater and foam glazes. It is possible to create reduction effects in oxidation firings, but with obvious challenges (blistering and bubbling). The carbon that silicon carbide particles release acts to reduce metallic oxides like iron and copper. Additions of tin oxide will aid color development, especially for copper reds. Fast firing is required as the silicon carbide is rapidly depleted.

Chemical Formula: SiC