Anodizer?

http://www.timescall.com/news/longmont-local-news/ci_19541928

anodize |ˈanəˌdīz|verb [ trans. ] [usu. as adj. ] ( anodized)coat (a metal, esp. aluminum) with a protective oxide layer by an electrolytic process in which the metal forms the anode.DERIVATIVESanodizer |ˈønəˈdaɪzər| noun