ELECTROPLATING ALUMINUM CONTAINING ZINC WITH BRASS AND NICKEL OR CHROMIUM

摘要

ELECTROPLATING ALUMINUM CONTAINING ZINC WITH BRASS AND NICKEL OR CHROMIUM Aluminum or magnesium based articles are plated with a decorative lustrous coating of nickel or chromium by selecting an article containing 1 to 8% zinc and, after cleansing the surface to remove any oxide film, electrodepositing a layer of brass containing copper in the range of 60 to 75% by weight prior to applying the outer lustrous coating. The article typically comprises an automotive bumper. The lustrous coating possesses a high degree of adherency to the aluminum and has increased lateral corrosion resistance.