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US 2014/0178710 A1Published application
Alloying interlayer for electroplated aluminum on aluminum alloys
AssigneeUnited Technologies Corporation
InventorsLei Chen, Mark R. Jaworowski, Curtis H. Riewe, Xiaomei Yu
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Abstract
An aluminum alloy component is protected by an electrodeposited aluminum coating. An electrodeposited intermediate aluminum-transition metal alloy and/or rare earth metal alloy layer between the aluminum alloy substrate and the protective coating enhances coating adhesion and corrosion resistance. The intermediate layer is formed by room temperature electrodeposition in ionic liquids.
Claims24
A coated metal component comprising:
- an aluminum alloy substrate;
- an electrodeposited intermediate aluminum alloy interlayer on the substrate;
- and
- an electrodeposited aluminum protective coating on the intermediate interlayer.
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A method of forming a coated aluminum alloy component, the method comprising:
- preparing the surface of the aluminum alloy component;
- electrodepositing an intermediate aluminum alloy interlayer on the surface of the component;
- and
- electrodepositing an aluminum protective coating on the intermediate aluminum alloy interlayer.
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Dependencies are inferred from the claim text.