Fluorescence and near-field scanning optical microscopy for investigating initiation of localized corrosion of Al 2024

The localized corrosion behavior of Al 2024 was investigated by using a fluorescent dye in combination with conventional fluorescence microscopy and near-field scanning optical microscopy. The fluorescent rings that mark the first steps of corrosion attack were associated with topographic features....

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Bibliographic Details
Published inJournal of the Electrochemical Society Vol. 147; no. 10; pp. 3691 - 3699
Main Authors BÜCHLER, M, KERIMO, J, GUILLAUME, F, SMYRL, W. H
Format Journal Article
LanguageEnglish
Published Pennington, NJ Electrochemical Society 01.10.2000
Subjects
Applied sciences
Corrosion
Corrosion mechanisms
Exact sciences and technology
Metals. Metallurgy
Open circuit
Pitting corrosion
Aluminium base alloys
Investigation method
Corrosion potential
Sodium sulfate
Potassium chloride
Fluorescence microscopy
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Summary:The localized corrosion behavior of Al 2024 was investigated by using a fluorescent dye in combination with conventional fluorescence microscopy and near-field scanning optical microscopy. The fluorescent rings that mark the first steps of corrosion attack were associated with topographic features. The topographic rings were also observed in the absence of the dye, demonstrating that the observed rings are not artifacts. Anodic polarization in the absence of oxygen yielded fluorescent and topographic features similar to those observed under open-circuit conditions, indicating that the dye marks anodic sites.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0013-4651
1945-7111
DOI:10.1149/1.1393960