RTX Corporation
HIERARCHICALLY STRUCTURED DUPLEX ANODIZED ALUMINUM ALLOY

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.