Corrosion Resistance of Superhydrophobic Layered Double Hydroxide Films on Aluminum

Abstract

Laurate-intercalated films of ZnAl layered double hydroxide (ZnAl-LDH–laurate) were fabricated by anion exchange of laurate with ZnAl-LDH–NO3− films on a porous anodic alumina/aluminum (PAO/Al) substrate. The presence of both microscale and nanoscale hierarchical structures (see SEM image) makes the film superhydrophobic, and thus it has much better corrosion resistance than anodic PAO film alone or ZnAl-LDH–NO3− films. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2008/z704694_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.