▁Bl uing ▁ ▁In ▁the ▁process ▁of ▁bl uing , ▁an ▁ox id izing ▁chemical ▁reaction ▁on ▁an ▁iron ▁surface ▁select ively ▁forms ▁magnet ite ▁( Fe 3 O 4 ), ▁the ▁black ▁ox ide ▁of ▁iron ▁( as ▁opposed ▁to ▁rust , ▁the ▁red ▁ox ide ▁of ▁iron ▁( Fe 2 O 3 )). ▁Black ▁ox ide ▁provides ▁some ▁protection ▁against ▁cor ros ion ▁if ▁also ▁treated ▁with ▁a ▁water - dis pla cing ▁oil ▁to ▁reduce ▁wet ting ▁and ▁gal van ic ▁action . ▁Bl uing ▁is ▁often ▁used ▁with ▁carbon ▁steel ▁and ▁cast ▁iron ▁p ans ▁in ▁conj unction ▁with ▁season ing . ▁ ▁See ▁also ▁Non - st ick ▁pan ▁ ▁References ▁▁ ▁Category : Cook ware ▁and ▁b ake ware ▁Category : Pol ym er ▁chem istry <0x0A> </s> ▁W R BS ▁( 1 2 3 0 ▁AM ) ▁is ▁a ▁radio ▁station ▁ ▁broadcast ing ▁a ▁Christian ▁talk ▁format . ▁Lic ensed ▁to ▁Baltimore , ▁Maryland , ▁the ▁station ▁serves ▁the ▁Baltimore ▁area . ▁ ▁The ▁station ▁is ▁owned ▁by ▁W R BS - AM , ▁L LC , ▁a ▁subs idi ary ▁of ▁Peter ▁and ▁John ▁Radio ▁Fellow ship , ▁Inc . ▁ ▁W R BS ▁( 1 2 3 0 ) ▁air s ▁Christian ▁talk ▁and ▁teaching ▁programs , ▁such ▁as ▁David ▁Jer em iah , ▁John ▁Mac Ar thur ▁and ▁Al ist air ▁Beg g , ▁and ▁live ▁call - in ▁shows ▁like ▁The ▁Dave ▁Ram sey ▁Show . ▁ ▁History ▁ ▁WITH ▁WITH