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INVESTIGATION OF POROUS ANODIC FILM FORMATION ON AA1050 BY ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY

M. Danişman, M. Kocabaş, M. Curioni and N. Cansever
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M. Danişman: Faculty of Engineering, Electrical and Electronics Engineering Department, Istanbul Gedik University, Yakacik 34876, Istanbul, Turkey
M. Kocabaş: #x2020;Faculty of Engineering and Natural Sciences, Department of Metallurgical and Materials Engineering, Konya Technical University, 42075 Konya, Turkey
M. Curioni: #x2021;School of Materials, Corrosion and Protection Centre, University of Manchester, M139PL Manchester, UK
N. Cansever: #xA7;Faculty of Chemistry-Metallurgy, Metallurgical and Materials Engineering Department, Yildiz Technical University, 34210 Istanbul, Turkey

Surface Review and Letters (SRL), 2020, vol. 27, issue 08, 1-7

Abstract: In this study, the formation of porous Al2O3 on commercial 1050 aluminium alloy (AA1050) in 2M sulfuric acid (H2SO4) electrolyte was investigated. Anodization was performed at 12V and 15V specimens for a charge density of 757mC/cm2 and 3231mC/cm2. The resulting oxides were analyzed using scanning electron microscopy (SEM). According to analysis, a hexagonal oxide formation containing more than one nano pore was observed on the surface of the specimen. The structural properties of the porous oxide film were analyzed with electrochemical impedance spectroscopy (EIS) analysis and film-related features such as thickness of the porous and the barrier layer were obtained.

Keywords: Anodic oxidation; porous Al2O3; AA1050; impedance spectroscopy (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X19501865

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