Process for electro-deposition of a ductile strongly adhesive zinc coating for metals
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United States of America Patent
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May 5, 1987
Grant Date -
N/A
app pub date -
Jul 25, 1985
filing date -
Jul 25, 1985
priority date (Note) -
Expired
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Abstract
The present invention relates an aqueous composition and process for electro-depositing at a pH of about 1 to 3.5, a ductile, highly adhesive, adsorptive and absorptive zinc coating on a metal article. The article with the electro-deposited zinc coating can be subjected to further treatment, such as, a second functional or decorative coating or painting and forming. The ductile zinc coating is resistant to cracking during forming and metal articles treated in accordance to the present invention, including the formed areas, are highly resistant to corrosion, stress corrosion cracking, wear and galling.
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