Fabrication of Corrosion Resistance Micro-Nanostructured Superhydrophobic Anodized Aluminum in a One-Step Electrodeposition ProcessReport as inadecuate




Fabrication of Corrosion Resistance Micro-Nanostructured Superhydrophobic Anodized Aluminum in a One-Step Electrodeposition Process - Download this document for free, or read online. Document in PDF available to download.

Centre Universitaire de Recherche sur l’Aluminium CURAL, Université du Québec à Chicoutimi, 555 Boulevard de l’Université, Chicoutimi, QC G7H 2B1, Canada





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Academic Editor: Nong Gao

Abstract The formation of low surface energy hybrid organic-inorganic micro-nanostructured zinc stearate electrodeposit transformed the anodic aluminum oxide AAO surface to superhydrophobic, having a water contact angle of 160°. The corrosion current densities of the anodized and aluminum alloy surfaces are found to be 200 and 400 nA-cm2, respectively. In comparison, superhydrophobic anodic aluminum oxide SHAAO shows a much lower value of 88 nA-cm2. Similarly, the charge transfer resistance, Rct, measured by electrochemical impedance spectroscopy shows that the SHAAO substrate was found to be 200-times larger than the as-received aluminum alloy substrate. These results proved that the superhydrophobic surfaces created on the anodized surface significantly improved the corrosion resistance property of the aluminum alloy. View Full-Text

Keywords: superhydrophobic aluminum; corrosion; anodized aluminum oxide AAO; organic-inorganic; micro-nanostructure; zinc stearate ZnSA; potentiodynamic polarization; electrochemical impedance spectroscopy EIS superhydrophobic aluminum; corrosion; anodized aluminum oxide AAO; organic-inorganic; micro-nanostructure; zinc stearate ZnSA; potentiodynamic polarization; electrochemical impedance spectroscopy EIS





Author: Ying Huang, Dilip K. Sarkar * and X.-Grant Chen

Source: http://mdpi.com/



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