6 The sponge electrode is then placed in a vacuum arc furnace for melting. On this water-cooled, copper container, an electric arc is used to melt the sponge electrode to type an ingot. The remaining two isotopes of silicon variety only seven% from the In a natural way transpiring silicon. https://lorenzojkkji.bloggactivo.com/35043884/top-guidelines-of-ethylene-bis-stearamide