A procedure to produce an adherent metal covering in a metallic article consisting of aluminum based aluminum and alloys. (Machine-translation by Google Translate, not legally binding)

摘要

A process for producing an adherent metal coating in a metallic article consisting of aluminum and aluminum-based alloys, characterized in that in its embodiment it comprises treating said article by immersion in an acidic solution constituted by at least two different inorganic acids, of which at less one of them is in a weight percent ratio above 0.1% to about 10% of an active acid selected from the group of hydrofluoric, hydrobromic and hydroiodic acid, the other inorganic acid mentioned being selected, in percentage proportion also by weight above 0.5% to about 20%, from the group of hydrochloric, hydrofluoric, hydrobromic, hydroiodic, phosphoric, chromic, perchloric and sulfuric acids and containing about 0.5% to about 50% by weight of a soluble salt of selected metal enters the group of salts of nickel, chromium, iron, cobalt, manganese and zinc; and because a final metallic layer adherent is applied to the surface of the article treated by acid immersion as defined. (Machine-translation by Google Translate, not legally binding)