Ultrasound-assisted anodization of aluminum in oxalic acid |
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| Authors: | Rong ZhangKaiming Jiang Yun ZhuHaiyang Qi Guqiao Ding |
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| Affiliation: | a Department of Physics, Shanghai Maritime University, 1550 Pudong Avenue, Shanghai 200135, People's Republic of China
b State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, People's Republic of China |
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| Abstract: | Porous anodic alumina is an important nanoscale template for fabrication of various nanostructures. We report a new ultrasound-assisted anodization process in oxalic acid. Under the continuous irradiation of ultrasound, the one-step-anodized sample has a smooth and clean surface, and two-step-anodization brings ordered porous anodic alumina with higher growth rate of 52 μm/h. The ultrasound applied during the anodization can clean the surface and enhance the nanopore growth since it can accelerate the oxide dissolving on the electrolyte/oxide interface. The ultrasound-assisted anodization may be utilized for other anodizations. |
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| Keywords: | Porous materials Ultrasound Anodization Anodic alumina Corrosion |
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