Six The sponge electrode is then put in a vacuum arc furnace for melting. With this water-cooled, copper container, An electrical arc is used to soften the sponge electrode to form an ingot. The earliest electrical application of SiC was being a surge defense in lightning arresters in electrical ability https://glasslinedcastironpipe38158.wikistatement.com/4891009/the_smart_trick_of_colour_of_manganese_dioxide_that_nobody_is_discussing