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Self-ordered Porous Alumina Fabricated via Phosphonic Acid Anodizing
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| Title: | Self-ordered Porous Alumina Fabricated via Phosphonic Acid Anodizing |
| Authors: | Akiya, Shunta Browse this author | | Kikuchi, Tatsuya Browse this author →KAKEN DB | | Natsui, Shungo Browse this author →KAKEN DB | | Sakaguchi, Norihito Browse this author →KAKEN DB | | Suzuki, Ryosuke O. Browse this author →KAKEN DB |
| Keywords: | Anodizing | | Porous Alumina | | Phosphonic Acid | | Self-ordering | | Nanostructure |
| Issue Date: | 1-Feb-2016 |
| Publisher: | Elsevier |
| Journal Title: | Electrochimica acta |
| Volume: | 190 |
| Start Page: | 471 |
| End Page: | 479 |
| Publisher DOI: | 10.1016/j.electacta.2015.12.162 |
| Abstract: | Self-ordered periodic porous alumina with an undiscovered cell diameter was fabricated via electrochemical anodizing in a new electrolyte, phosphonic acid (H3PO3). High-purity aluminum plates were anodized in phosphonic acid solution under various operating conditions of voltage, temperature, concentration, and anodizing time. Phosphonic acid anodizing at 150-180 V caused the self-ordering behavior of porous alumina, and an ideal honeycomb nanostructure measuring 370-440 nm in cell diameter was successfully fabricated on the aluminum substrate. Conversely, disordered porous alumina grew at below 140 V, and anodizing at above 190 V caused local thickening due to oxide burning. Two-step phosphonic acid anodizing allows the fabrication of high aspect ratio ordered porous alumina. HPO32 anions originated from the electrolyte were incorporated into the porous oxide during anodizing. Consequently, a double-layered porous alumina consisting of a thick outer layer containing incorporated HPO32 anions, and a thin inner layer without anions was constructed via phosphonic acid anodizing. |
| Rights: | © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/68240 |
| 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)
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Submitter: 菊地 竜也
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