期刊
APPLIED SURFACE SCIENCE
卷 258, 期 22, 页码 8928-8933出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2012.05.119
关键词
Boehmite; Superhydrophobicity; Dual scale roughness; Anticorrosion
类别
资金
- China National Textile and Apparel Council [2011054]
A superhydrophobic boehmite film composed of dual scale microprotrusions has been fabricated on an Al foil via a facile solution-phase approach. The hierarchical microprotrusions are built up of leaflike nanoplatelets and follow a heterogeneous nucleation, growth and aggregation mechanism. Steric acid molecules chemisorb onto the boehmite film in order to effect hydrophobization. The resulting superhydrophobic surface exhibits a water contact angle of 168 degrees and a sliding angle of similar to 2.1 degrees for a 5 mu L droplet. The combination of the dual scale roughness and the low surface energy coating accounts for the superhydrophobicity. The superhydrophobic surface has an excellent non-sticking behavior and exhibits anticorrosion in an electrolyte solution, which should be critical to the applications of Al materials in engineering. (C) 2012 Elsevier B.V. All rights reserved.
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