Bioinspired construction on aluminum alloy surfaces with stable super‐hydrophobicity and their resulting wettability |
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| Authors: | B. Yin L. Fang A. Q. Tang J. Hu J. H. Mao Q. L. Huang G. Bai |
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| Affiliation: | 1. Department of Applied Physics, Chongqing University, , Chongqing, 400044 China;2. National Engineering Research Center for Magnesium Alloys, Chongqing University, , Chongqing, 400044 China;3. State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, , Chongqing, 400044 China |
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| Abstract: | The bioinspired leaf‐like super‐hydrophobic surfaces on aluminum alloy were fabricated by means of a facile method using anodic oxidation. The surface morphologies, compositions, and wettability were investigated with SEM, XPS, and contact angle measurement, respectively. The SEM showed hierarchical microstructures and nanostructures, the static contact angle was about 167.7 ± 1.2°, and sliding angle was 5°. The super‐hydrophobic phenomenon of the prepared surface was analyzed with Cassie theory, and it is found that only about 3% of the water surface is contacted with the metal substrate and the remaining 97% is contacted with the air cushion. Copyright © 2011 John Wiley & Sons, Ltd. |
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| Keywords: | aluminum alloy super‐hydrophobic surface contact angle wettability |
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