Fabrication of Nanoporous Aluminum Oxide via a Two-Step Anodisation Process

Nur Ubaidah Saidin; Kok Kuan Ying; Inn Khuan Ng; Suhaila Hani Ilias

doi:10.4028/www.scientific.net/AMR.620.464

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 620Fabrication of Nanoporous Aluminum Oxide via a...

Fabrication of Nanoporous Aluminum Oxide via a Two-Step Anodisation Process

Abstract:

In this study, we report the fabrication of nanoporous aluminum oxide film from high purity aluminium foil via a two-step anodisation process controlled by a constant direct current potential ranging from 40 60 V from a DC power supply. The anodisation process was conducted at 20^˚C in an electrochemical cell with the Al foil acting as anode, Pt as cathode and an acidic bath as electrolyte. Porous aluminium oxide films of pore diameters ranging between 30 90 nm were successfully fabricated. The morphologies and phase compositions of the anodized porous alumina films were investigated using scanning electron microscopy (SEM) and x-ray diffraction (XRD) for characterizations.