Commercially, silicon is purified by heating sand and carbon in an electric furnace. A molten salt electrolysis system is utilised to obtain ultrapure silicon. Silicon is alloyed with aluminum to be used in engines since the presence of silicon increases the metal’s castability. Silicon can greatly enhance iron’s magnetic properties; https://milofgfda.wikiexcerpt.com/3813448/top_silicon_carbide_semiconductor_secrets