Method for preparing aluminum for plating

Details Method for preparing aluminum for plating Method for preparing aluminum for plating

1985-02-07

1987-06-02

Silverberg, Sam

Coating processes

Immersion or partial immersion

Metal base

204 384, 427436, B05D 118

Patent

active

046703128

ABSTRACT:
Method for preparing aluminum, especially large aluminum pieces or articles having a surface layer of aluminum oxide for subsequent metal plating wherein the aluminum or aluminum alloy substrate is immersed in a bath containing metal salts and acid such that the acid content relative to the metal salt is sufficient to remove the surface aluminum oxide layer without substantial attack on the underlying aluminum while enabling the permanent deposit thereon of a continuous, smooth, adherent metal or metal alloy coating directly onto the aluminum, thereby replacing the aluminum oxide layer. Subsequent, essentially blister-free electroless or electrolytic plating of nickel or a nickel alloy, copper or a copper alloy onto the metal or metal alloy coated aluminum are made possible thereby.

REFERENCES:
patent: 1372290 (1921-03-01), Hurley
patent: 3672964 (1973-06-01), Bellis
patent: 3932685 (1976-01-01), Flowers
patent: 4235648 (1980-11-01), Richardson

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