CLEANING COMPOSITIONS FOR METAL SUBSTRATES

PROBLEM TO BE SOLVED : To provide an alkaline metal cleaner which does not produce smut, is efficient in increasing adhesion of subsequent coatings in a metal finishing process, does not require many steps for application, and/or can be applied at room temperature. SOLUTION : A composition to be applied to a metal substrate comprises an aqueous carrier, a hydroxide anion and/or a phosphate anion, and a corrosion inhibitor comprising an azole compound, rare earth ions, alkaline earth metal ions, and/or transition metal ions. A substrate or article includes the composition to be applied to a metal substrate and a coating on the composition. A method of fabricating a substrate comprises applying the composition to a substrate, drying the composition to form a dried composition, and applying a coating on the dried composition. SELECTED DRAWING : None COPYRIGHT : (C)2018, JPO&INPIT