Silicate treatment of sealed anodized aluminum

Details Silicate treatment of sealed anodized aluminum Silicate treatment of sealed anodized aluminum

2007-06-27

2010-12-14

Fletcher, III, William Philip (Department: 1715)

Coating processes

Applying superposed diverse coating or coating a coated base

Synthetic resin coating

C427S412500, C205S220000

Reexamination Certificate

active

07851025

ABSTRACT:
The present invention describes a method for the post-treatment of fully sealed anodized aluminum parts, especially for the automotive industry, characterized in that an aqueous silicate solution is applied to fully sealed anodized aluminum layers, where said fully sealed anodized aluminum layer has a film thickness of at least 5 μm and a film weight of at least 13 g/m2, respectively. Said solution preferably contains an alkali metal (M) silicate with not more than 2.0 wt.-% of SiO2, in which the ratio of SiO2:M2O is preferably not more than 2. This treatment increases the alkaline stability according to the standardized corrosion tests in the automotive industry without any further treatment or organic coating applied to said treated aluminum surface.

REFERENCES:
patent: 2714066 (1955-07-01), Jewett et al.
patent: 3181461 (1965-05-01), Fromson
patent: 3374155 (1968-03-01), Weber
patent: 4492616 (1985-01-01), Pliefke et al.
patent: 5411607 (1995-05-01), Basaly et al.
patent: 5811218 (1998-09-01), Kaii et al.
patent: 5919297 (1999-07-01), Chavannes
patent: 6686053 (2004-02-01), Wada et al.
patent: 664258 (1965-11-01), None
patent: 0 193 964 (1989-07-01), None
patent: 0 799 717 (1999-11-01), None
patent: 1 236 815 (2002-09-01), None
patent: 1 064 332 (2003-06-01), None
patent: 1 625 944 (2006-02-01), None
patent: 1 873 278 (2008-01-01), None
patent: 926 418 (1963-05-01), None
patent: 02-175299 (1990-07-01), None
patent: 2003-136853 (2003-05-01), None
patent: WO 01/34872 (2001-05-01), None
Ullmann's Encyclopedia of Industrial Chemistry, 5thEdition, vol. 9, pp. 174-176 (1987).
T. W. Jelinek, Oberflaechenbehandlung von Aluminum, Eugen G. Leuze Verlag, Ch. 6.1.3.1 (1997).
Aluminium and aluminium alloys—Anodizing—Part 1:Method for specifying decorative and protective anodic oxidation coatings on aluminium, BS EN 12373-1:2001 which supersedes BS1615:1972, European Standard, pp. 3-27, May 2001.

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