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US 2013/0095317 A1Published application
Corrosion resistant sol-gel coating and compositin and process for making the same
AssigneeHenkel AG & Co. KGaA
InventorsKirk KRAMER, Lisa K. Salet, Shawn E. Dolan, Patrick A. Scalera
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Abstract
A coating composition and a method for coating metallic substrates for corrosion resistance. In at least one embodiment, the coating composition comprises acid, metal acetate, organosilane and water.
Claims20
An aqueous organo sol-gel composition for coating a metallic component, the composition comprising:
- acid;
- metal acetate;
- organosilane;
- and
- water.
2 more elements
A coated metallic substrate comprising:
- an aluminum alloy substrate comprising copper;
- a metallic oxide coating on the aluminum alloy substrate, said metallic oxide being selected from the group consisting of zirconium oxide, titanium oxide and combinations thereof;
- and
- an organo sol-gel composition applied over the metallic oxide coating, and dried at temperatures less than 100° Celsius thereby forming a sol-gel coating;
- said organo sol-gel composition comprising:
- glacial acetic acid;
- an epoxy silane;
- a metal acetate selected from zirconium acetate, magnesium acetate or a combination thereof;
- wherein the coated metallic substrate shows no corrosion after at least 500 hours salt spray testing according to ASTM B117.
6 more elements
Dependencies are inferred from the claim text.