Etchant for aluminum alloys

Details Etchant for aluminum alloys Etchant for aluminum alloys

1996-12-23

1999-04-20

Warden, Robert

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Treating substrate prior to coating

205172, 205183, 205261, 205214, 216102, 216104, 216109, 148275, C25D 534, C25D 544, C23F 100

Patent

active

058955631

ABSTRACT:
An iron immersion composition of matter is disclosed comprising a compound having a divalent or trivalent iron ion, a compound having a fluoride ion, and a compound having an acid hydrogen ion. A process for treating an aluminum substrate to improve the adhesion of metal layers to the substrate is also disclosed comprising contacting the substrate with the acidic iron immersion composition to produce an iron immersion coating on the alloy, and contacting the iron immersion coating with an etchant to substantially remove the coating and produce a microporous surface on the substrate.

REFERENCES:
patent: 4650525 (1987-03-01), Yoshida et al.
patent: 5035749 (1991-07-01), Haruta et al.
patent: 5244539 (1993-09-01), McGrath et al.
patent: 5271804 (1993-12-01), Muller et al.
CAPLUS abstract of Kogure (JP 51057644), May 20, 1976.
WPIDS abstract of Kogure (JP51057644), May 20, 1976.

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