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Fabrication of self-ordered porous alumina via anodizing in sulfate solutions

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Title: Fabrication of self-ordered porous alumina via anodizing in sulfate solutions
Authors: Kondo, Ryunosuke Browse this author
Kikuchi, Tatsuya Browse this author →KAKEN DB
Natsui, Shungo Browse this author →KAKEN DB
Suzuki, Ryosuke O. Browse this author →KAKEN DB
Keywords: Aluminum
Sodium hydrogen sulfate
Porous materials
Issue Date: 15-Nov-2016
Publisher: Elsevier
Journal Title: Materials letters
Volume: 183
Start Page: 285
End Page: 289
Publisher DOI: 10.1016/j.matlet.2016.07.109
Abstract: Self-ordered porous alumina was fabricated via anodizing in an acid salt electrolyte solution, sodium hydrogen sulfate (NaHSO4). High-purity aluminum specimens were anodized in a NaHSO4 solution under various operating conditions with adjusted concentrations, temperatures, applied voltages, and times. Self-ordering was achieved via NaHSO4 anodizing at appropriate applied voltages ranging from 20 to 28 V, and ordered cell arrangements with the cell size of 55-77 nm were successfully fabricated. Sulfur atoms originating from the electrolyte anions were incorporated into the ordered porous alumina. A honeycomb distribution consisting of a thick outer layer with a high concentration of sulfur and a very thin inner skeleton with a relatively low concentration sulfur was formed via NaHSO4 anodizing. Our results suggested that there are now many electrolyte options for the fabrication of self-ordered porous alumina with a wide range of nanosizes.
Rights: © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 菊地 竜也

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