Preparation and Characterisation of Alumina Template Obtained by OneStep Anodization Method
Keywords:
anodization, alumina template, SEM, XRD, optical properties
Abstract
The goal of this study was to obtain an alumina template (AAO) by one-step anodization method and to evaluate its optical properties correlated with the annealing temperature. AAO was obtained from two different media: sulphuric acid (1.5 M H2SO4) and oxalic acid (0.4 M H2C2O4) at a potential of 15 V and 40 V, respectively. AAO morphology and chemical composition had been investigated by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The average pore diameters such as 20 nm for AAO obtained from H2SO4 and 40 nm from H2C2O4 were measured. The crystalline structures of AAO samples annealed at three different temperatures of 150 ºC, 300 ºC and 350 ºC were studied by Xray diffractometry (XRD). The effect of annealing temperature on the optical properties of AAO was studied by UV-VIS spectrophotometry.
References
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[7]. M.E. Thomas, W.J. Tropf, S.L. Gilbert – VacuumUltraviolet Characterization of Sapphire, AlON, and Spinel Near the Band Gap, Opt. Eng., 32 (1993), 1340–1343.
[8]. C. Argento and R. H. French – Parametric Tip Model and Force–Distance Relation for Hamaker Constant Determination from AFM, J. Appl. Phys., 80 (1996), 6081–6090.
[9]. R. H. French – Electronic Structure of a-Al2O3, with Comparison to AlON and AlN, J. Am. Ceram. Soc., 73 (1990), 477–489.
[10]. M.L. Bortz, R.H. French, D.J. Jones, R.V. Kasowski, F.S. Ohuchi – Temperature Dependence of the Electronic Structure of Al2O3, MgAl2O4, and MgO, Phys. Scr., 41 (1990), 537–541.
[11]. P.P. Mardilovich, A.N. Govyadinov, N.I. Mukhurov, A.M. Rzhevskii, R. Paterson – New and modified anodic alumina templates. Part I. Thermotreatment of anodic alumina templates, J. Membr. Sci., 98 (1995), 131.
[12]. R. Ozao, M. Ochiai, H. Yoshida, Y. Ichimura, T. Inada – Preparation of γ-alumina templates from sulphuric electrolyte anodic alumina and its transition to α-alumina, J. Thermal Anal. Calorim., 64 (2001), 923.
[13]. H. Asoh, K. Nishio, M. Nakao, T. Tamamura, H. Masuda – Conditions for fabrication of ideally ordered anodic porous alumina using pretextured Al, J. Electrochem. Soc., 148 (2001), B152.
[14]. Cynthia G. Zoski – Handbook of Electrochemistry, Elsevier, 2007.
[15]. Robert S. Alwitt – Anodizing, www.electrochem.cwru.edu/encycl.
[16]. ***, www.shodor.org.
[17]. F. Keller, M.S. Hunter, D.L. Robinson – Structural Features of Oxide Coatings on Aluminum, J. Electrochem. Soc., 100 (1953), 9, 411-419.
[18]. P. Bocchetta, C. Sunseri, A. Bottino, G. Capannelli, G. Chiavarotti, S. Piazza, F. Di Quarto – Asymmetric alumina membranes electrochemically formed in oxalic acid solution Journal of Applied Electrochemistry 32: 977–985, 2002.
[19]. C. Gheorghies, L. Gheorghies, S. Ciortan, V. Paunoiu, A.M. Cantaragiu, C.C. Lalau, D.E. Rusu – Structural Analysis of Alumina Thin Layer Prepared by Controlled Oxidation Process, The Annals of “Dunărea de Jos” University of Galaţi, Fascicle V, Technologies in Machine Building (2009), 319-322.
[20]. L. Gheorghies, A. Sion - Obţinerea şi analiza acoperirilor metalice de protecţie, Ed. CERMI, Iaşi, 2012.
[21]. L. Gheorghies - Nanomecanica suprafetei, Ed. Ars Docendi, Bucuresti, 2004.
Published
2013-06-15
How to Cite
1.
GAVRIL (DONOSE) MD, CANTARAGIU AM, GHEORGHIES C, TIGAU N, DONOSE S. Preparation and Characterisation of Alumina Template Obtained by OneStep Anodization Method. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Jun.2013 [cited 3May2024];36(2):5-. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/2830
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