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Anodization of Aluminium using a fast two-step process

Ilango, Murugaiya Sridar and Mutalikdesai, Amruta and Ramasesha, Sheela K (2016) Anodization of Aluminium using a fast two-step process. In: JOURNAL OF CHEMICAL SCIENCES, 128 (1). pp. 153-158.

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Official URL: http://dx.doi.org/10.1007/s12039-015-1006-8


Ultra-fast two-step anodization method is developed for obtaining ordered nano-pores on aluminium (Al) foil. First anodization was carried out for 10 min, followed by 3 min of second anodization at high voltage (150 V) compared to previous reports of anodization times of 12 h (40-60 V). The pore dimensions on anodized alumina are 180 nm for pore diameter and 130 nm for inter-pore distance. It was evident that by increasing the anodization voltage to 150 V, the diameter of the pores formed was above 150 nm. The electrolyte and its temperature affect the shape and size of the pore formation. At lower anodization temperature, controlled pore formation was observed. The anodized samples were characterized using the field emission scanning electron microscope (FE-SEM) to determine the pore diameter and inter-pore distance. Using UV-Visible spectroscopy, the reflectance spectra of anodized samples were measured. The alumina (Al2O3) peaks were identified by x-ray diffraction (XRD) technique. The x-ray photo electron spectroscopy (XPS) analysis confirmed the Al 2p peak at 73.1 eV along with the oxygen O 1s at 530.9 eV and carbon traces C 1s at 283.6 eV.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the INDIAN ACAD SCIENCES, C V RAMAN AVENUE, SADASHIVANAGAR, P B #8005, BANGALORE 560 080, INDIA
Keywords: Anodization; phosphoric acid; anodization time; anodized aluminium oxide; aluminium
Department/Centre: Division of Mechanical Sciences > Divecha Centre for Climate Change
Date Deposited: 24 Feb 2016 07:14
Last Modified: 24 Feb 2016 07:14
URI: http://eprints.iisc.ac.in/id/eprint/53323

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