VERFAHREN ZUR VERBESSERUNG DER KORROSIONSEIGENSCHAFTEN VON MIT CHROM PLATTIERTEN GEGENSTAENDEN AUS ALUMINIUM UND ALUMINIUMLEGIERUNGEN

摘要

The invention relates to a method for preparing aluminum and aluminum alloy objects for plating which results in an article whch exhibits improved corrosion resistant characteristics. The process includes anodizing the aluminum object in an acid bath, placing the anodized object in contact with a chemical which impregnates and is absorbed by the oxidized crystalline surface and finally exposing the treated aluminum object to heat so that the impregnating chemical is pyrolyzed to form an electronically conductive oxide thereby permitting the plating process while preserving an anodic coating of high ionic resistance.