Evaluation of the electrochemical corrosion behavior of anodic aluminum oxide produced by the two-step anodization process

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dc.contributor.authorYılmaz, Bengisu
dc.contributor.authorHapçı Ağaoğlu, Gökçe
dc.contributor.authorYüksel, Behiye
dc.contributor.authorOrhan, Gökhan
dc.date.accessioned2024-06-13T20:18:15Z
dc.date.available2024-06-13T20:18:15Z
dc.date.issued2020
dc.departmentFakülteler, Mühendislik Fakültesi, Makine Mühendisliği Bölümü
dc.description.abstractPurpose This study aims to investigate the effect of different pore diameter and pore length on corrosion properties of anodic aluminum oxide (AAO) film. Design/methodology/approach AAO layer was produced by two-step anodization aluminum in oxalic acid. The surface morphology was investigated using field emission scanning electron microscopy. The pore diameters were ranging from 25 +/- 5 to 65 +/- 5 nm and the pore length ranging from 5 to 17 mu m. The corrosion properties of the AAO films was analyzed by potentiodynamic polarization and electrochemical impedance spectroscopy tests. Corrosion properties and morphology of the anodic films depending on anodization times and pore expansion times were evaluated. Findings All highlights of this work can be summarized with the following specified below: more treatment with the protective barrier layer of the solution as the pore diameter increases depends on the morphology of the nanotube structured AAO layer. The excellent corrosion resistance renders AAO films without pore expansion very promising. The oxide layer thickness does not affect the corrosion resistance. The better corrosion resistance of AAO films at low pore length can be ascribed to the barrier layer thickness and the more homogeneous structure. The presence of defects for the higher pore length decreases its corrosion resistance. Originality/value The AAO films were fabricated by a two-step anodization method in oxalic acid. The anodization times and pore expansion times affect the corrosion performance. The AAO film without pore expansion has good corrosion resistance. The corrosion resistance decreases as the pore length increases.
dc.identifier.doi10.1108/ACMM-10-2019-2197
dc.identifier.endpage518
dc.identifier.issn0003-5599
dc.identifier.issn1758-4221
dc.identifier.issue5
dc.identifier.scopus2-s2.0-85090975848
dc.identifier.scopusqualityQ3
dc.identifier.startpage509
dc.identifier.urihttps://doi.org/10.1108/ACMM-10-2019-2197
dc.identifier.urihttps://hdl.handle.net/11501/1281
dc.identifier.volume67
dc.identifier.wosWOS:000572284500001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor0000-0003-4645-6460
dc.institutionauthorYüksel, Behiye
dc.language.isoen
dc.publisherEmerald Group Publishing Ltd
dc.relation.ispartofAnti-Corrosion Methods and Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectEIS
dc.subjectNanostructures
dc.subjectCorrosion Resistance
dc.subjectAnodic Aluminum Oxide
dc.subjectTwo-Step Anodizing
dc.titleEvaluation of the electrochemical corrosion behavior of anodic aluminum oxide produced by the two-step anodization process
dc.typeArticle

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