Modelling the corrosion behaviour of Al2CuMg coarse particles in copper-rich aluminium alloys

The corrosion behaviour of 2024 aluminium alloy in sulphate solutions was studied; attention was focused on the influence of coarse intermetallic Al2CuMg particles on the corrosion resistance of the alloy. Model alloys representative of the aluminium matrix and of Al2CuMg coarse intermetallics were...

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Bibliographic Details
Published inCorrosion science Vol. 48; no. 11; pp. 3838 - 3851
Main Authors BLANC, Christine, FREULON, Alexandre, LAFONT, Marie-Christine, KIHN, Yolande, MANKOWSKI, Georges
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Science 01.11.2006
Elsevier
Subjects
Applied sciences
Corrosion
Corrosion environments
Engineering Sciences
Exact sciences and technology
Materials
Metals. Metallurgy
Production techniques
Surface treatment
A. Aluminium
C. Corrosion
Corrosion
Intermetallic compound
Surface layer
C. Passive films
A. Sputtered films
Modeling
Passivity
Sputtering
A. Intermetallics
Passivation
A. Sputtered filmm
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Summary:The corrosion behaviour of 2024 aluminium alloy in sulphate solutions was studied; attention was focused on the influence of coarse intermetallic Al2CuMg particles on the corrosion resistance of the alloy. Model alloys representative of the aluminium matrix and of Al2CuMg coarse intermetallics were synthesized by magnetron sputtering. Open-circuit potential measurements, current-potential curve plotting and galvanic coupling tests were performed in sulphate solutions with or without chlorides. Further explanations were deduced from the study of the passive films grown on model alloys in sulphate solutions. The results showed that model alloys are a powerful tool to study the corrosion behaviour of aluminium alloys.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2006.01.012