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Self-Ordering Behavior of Anodic Porous Alumina via Selenic Acid Anodizing

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Title: Self-Ordering Behavior of Anodic Porous Alumina via Selenic Acid Anodizing
Authors: Kikuchi, Tatsuya Browse this author →KAKEN DB
Nishinaga, Osamu Browse this author
Natsui, Shungo Browse this author →KAKEN DB
Suzuki, Ryosuke O. Browse this author →KAKEN DB
Keywords: Aluminum
Anodic Porous Alumina
Selenic Acid
Issue Date: 10-Aug-2014
Publisher: Elsevier
Journal Title: Electrochimica Acta
Volume: 137
Start Page: 728
End Page: 735
Publisher DOI: 10.1016/j.electacta.2014.06.078
Abstract: The self-ordering behavior of anodic porous alumina that was formed by anodizing in selenic acid elec-trolyte (H2SeO4) at various concentrations and voltages was investigated with SEM and AFM imaging.A high purity aluminum foil was anodized in 0.1-3.0 M selenic acid solutions at 273 K and at constantcell voltages in the range of 37 to 51 V. The regularity of the cell arrangement increased with increas-ing anodizing voltage and selenic acid concentration under conditions of steady oxide growth withoutburning. Anodizing at 42-46 V in 3.0 M selenic acid produced highly ordered porous alumina. By selec-tive dissolution of the anodic porous alumina, highly ordered convex nanostructures of aluminum withdiameters of 20 nm and heights of 40 nm were exposed at the apexes of each hexagonal dimple array.Highly ordered anodic porous alumina with a cell size of 102 nm from top to bottom can be fabricatedby a two-step selenic acid anodizing process, that includes the first anodizing step, the selective oxidedissolution, and the second anodizing step.
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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