Influence of the Anodic Oxidation Treatment on the Corrosion Behaviour of Aluminium and Aluminium Alloys

This paper deals with the effect of anodic oxidation treatment on the corrosion behaviour of 6061 aluminium alloy in natural sea water. Anodic oxidation treatment leads to the formation of an amorphous oxide layer on the top surface of 6061 aluminium alloy as shown by optical microscopy results. The...

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Main Authors: Valentin DUMITRAŞCU, Lidia BENEA
Format: Article
Language:English
Published: Galati University Press 2015-09-01
Series:The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science
Subjects:
Online Access:https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/1296
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author Valentin DUMITRAŞCU
Lidia BENEA
author_facet Valentin DUMITRAŞCU
Lidia BENEA
author_sort Valentin DUMITRAŞCU
collection DOAJ
description This paper deals with the effect of anodic oxidation treatment on the corrosion behaviour of 6061 aluminium alloy in natural sea water. Anodic oxidation treatment leads to the formation of an amorphous oxide layer on the top surface of 6061 aluminium alloy as shown by optical microscopy results. The corrosion behaviour was investigated in natural sea water, harvested from the Black Sea, Mangalia harbour. The study was done by in situ electrochemical methods such as: open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PD) and cyclic voltammetry polarization (CV). The results show that the untreated 6061 aluminium alloy undergoes severe corrosion in natural sea water in comparison with anodized 6061 aluminium alloy. The results obtained by different electrochemical methods were in good agreement with each other and showed an improved corrosion resistance of the anodic oxide layer formed on aluminium alloy in natural sea water. The results were confirmed by optical microscopy.
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spelling doaj.art-30393cb87cec44bbb6f5a3c4defc553c2022-12-21T20:17:45ZengGalati University PressThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science2668-47482668-47562015-09-013831296Influence of the Anodic Oxidation Treatment on the Corrosion Behaviour of Aluminium and Aluminium AlloysValentin DUMITRAŞCU0Lidia BENEA1"Dunarea de Jos" University of Galati"Dunarea de Jos" University of GalatiThis paper deals with the effect of anodic oxidation treatment on the corrosion behaviour of 6061 aluminium alloy in natural sea water. Anodic oxidation treatment leads to the formation of an amorphous oxide layer on the top surface of 6061 aluminium alloy as shown by optical microscopy results. The corrosion behaviour was investigated in natural sea water, harvested from the Black Sea, Mangalia harbour. The study was done by in situ electrochemical methods such as: open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PD) and cyclic voltammetry polarization (CV). The results show that the untreated 6061 aluminium alloy undergoes severe corrosion in natural sea water in comparison with anodized 6061 aluminium alloy. The results obtained by different electrochemical methods were in good agreement with each other and showed an improved corrosion resistance of the anodic oxide layer formed on aluminium alloy in natural sea water. The results were confirmed by optical microscopy.https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/1296anodic oxidationaluminiumcorrosionaluminium alloy
spellingShingle Valentin DUMITRAŞCU
Lidia BENEA
Influence of the Anodic Oxidation Treatment on the Corrosion Behaviour of Aluminium and Aluminium Alloys
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science
anodic oxidation
aluminium
corrosion
aluminium alloy
title Influence of the Anodic Oxidation Treatment on the Corrosion Behaviour of Aluminium and Aluminium Alloys
title_full Influence of the Anodic Oxidation Treatment on the Corrosion Behaviour of Aluminium and Aluminium Alloys
title_fullStr Influence of the Anodic Oxidation Treatment on the Corrosion Behaviour of Aluminium and Aluminium Alloys
title_full_unstemmed Influence of the Anodic Oxidation Treatment on the Corrosion Behaviour of Aluminium and Aluminium Alloys
title_short Influence of the Anodic Oxidation Treatment on the Corrosion Behaviour of Aluminium and Aluminium Alloys
title_sort influence of the anodic oxidation treatment on the corrosion behaviour of aluminium and aluminium alloys
topic anodic oxidation
aluminium
corrosion
aluminium alloy
url https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/1296
work_keys_str_mv AT valentindumitrascu influenceoftheanodicoxidationtreatmentonthecorrosionbehaviourofaluminiumandaluminiumalloys
AT lidiabenea influenceoftheanodicoxidationtreatmentonthecorrosionbehaviourofaluminiumandaluminiumalloys