Hierarchically structured duplex anodized aluminum alloy
AssigneeUnited Technologies Corporation
InventorsZhongfen (Vivian) Ding, Georgios S Zafiris, Mark R Jaworowski
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Abstract
A method of growing a hierarchically structured anodized film to an aluminum substrate including growing a Phosphoric Acid Anodizing (PAA) film layer to an aluminum substrate and growing a multiple of Tartaric-Sulfuric Acid Anodizing (TSA) film layers under the Phosphoric Acid Anodizing (PAA) film layer.
Claims20
A method of growing a hierarchically structured anodized film to an aluminum substrate, comprising:
- growing a Phosphoric Acid Anodizing (PAA) film layer to an aluminum substrate;
- and
- growing a stepped growth Tartaric-Sulfuric Acid (TSA) film layer underneath said Phosphoric Acid Anodizing (PAA) film layer.
An hierarchically structured anodized film for an aluminum substrate, comprising:
- a stepped growth Tartaric-Sulfuric Acid (TSA) film layer.
A method of growing a hierarchically structured anodized film to an aluminum substrate, comprising:
- applying a first voltage to an aluminum alloy workpiece within a Tartaric-Sulfuric Acid (TSA) solution;
- applying a second voltage different than the first voltage while the aluminum alloy workpiece is in the Tartaric-Sulfuric Acid (TSA) solution.
Dependencies are inferred from the claim text.