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http://dx.doi.org/10.3365/KJMM.2012.50.1.059

Fabrication of Long-range Ordered Porous Alumina Membranes with Various Voltages Applied for Hard Anodization  

Jang, HyunChul (Department of Nano Science & Technology, University of Seoul)
Choi, JungMi (Department of Nano Science & Technology, University of Seoul)
An, KiTae (Department of Nano Science & Technology, University of Seoul)
Lee, Naesung (Faculty of Nanotechnology and Advanced Materials Engineering, EEMRC, Sejong University)
Park, Yunsun (Department of Industrial and management Engineering, Myongi University)
Sok, JungHyun (Department of Nano Science & Technology, University of Seoul)
Publication Information
Korean Journal of Metals and Materials / v.50, no.1, 2012 , pp. 59-63 More about this Journal
Abstract
Studying the long-range ordering of nanopores on the anodic aluminum oxide (AAO) membranes under a hard anodization (HA) approach is crucial in producing well-aligned nanopores on the AAO membranes. Electro-polishing in a mixture of ethanol and perchloric acid for 5 min removed marks formed by rolling and produced flat surfaces on aluminum substrates. The AAO was formed by the first HA process, providing seeds for the subsequent production of uniform AAO nanopores. The second HA process carried out on the seeds produced well-aligned, uniform AAO nanopores. The AAO nanopores, varying in size and shape, were observed with voltages applied for HA. This study provides a route for controlling the size and shape of AAO nanopores by changing the applied voltages.
Keywords
nanostructured materials; anodization; microstructure; image analysis; anodic aluminum oxide;
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