Fabrication of Low-Adhesive Superhydrophobic Al Surfaces via Self-Assembled Primary Cell Assisted Etching

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Indexed by:期刊论文

Date of Publication:2013-07-03

Journal:JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY

Included Journals:SCIE、EI

Volume:34

Issue:7

Page Number:908-913

ISSN No.:0193-2691

Key Words:Aluminum; etching; primary cell; superhydrophobic

Abstract:In this work, we present a novel etching method to fabricate the superhydrophobic Al surfaces in a salt solution. Hierarchical rough structures composed of micrometer-scale pits, protrusions, and rectangle plateaus and nanometer-scale step-like structures are formed on the Al surfaces by the self-assembled primary cell assisted etching and the preferential corrosion of grain boundaries and dislocations. After fluoroalkylsilane modification, the superhydrophobic Al surfaces with a 166.4 degrees water contact angle and a 1 degrees rolling angle are obtained. The developed method does not use any strong acids and has a smaller harm to the environment and operators.

Date of Publication:2013-07-03