Silicon carbide is applied to be a raw ingredient in some glazes applied to ceramics. At large temperatures it may possibly decrease metal oxides forming silica and carbon dioxide. It had been identified early on[when?] that SiC experienced such a voltage-dependent resistance, and so columns of SiC pellets were related https://www.quora.com/profile/Trevor-Flatcher-2/Exploration-of-Silicon-Carbide-Application-in-Friction-Materials-https-iflatiron-com-exploration-of-silicon-carbide-a