Formation of nanocrystalline surface layers by annealing and their role in filiform corrosion of aluminum sheet

Formation of nanocrystalline surface layers by annealing and their role in filiform corrosion of aluminum sheet

Annealing of specific rolled aluminum alloys at temperatures above 300 deg C causes a significant increase in the filiform corrosion susceptibility of the painted substrate. As demonstrated for a selected substrate (AA8006), the increased susceptibility is related to the formation of a thin, (electr...

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Veröffentlicht in:Journal of the Electrochemical Society 1997-07, Vol.144 (7), p.L196-L197
Hauptverfasser: LETH-OLSEN, H, NORDLIEN, J. H, NISANCIOGLU, K
Format: Artikel
Sprache:eng
Schlagworte:
ALUMINIUM BASE ALLOYS
ANNEALING
Applied sciences
COATINGS
CORROSION
Corrosion prevention
CORROSION RESISTANCE
ETCHING
Exact sciences and technology
MATERIALS SCIENCE
Metals. Metallurgy
MORPHOLOGY
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container_end_page L197
container_issue 7
container_start_page L196
container_title Journal of the Electrochemical Society
container_volume 144
creator LETH-OLSEN, H
NORDLIEN, J. H
NISANCIOGLU, K
description Annealing of specific rolled aluminum alloys at temperatures above 300 deg C causes a significant increase in the filiform corrosion susceptibility of the painted substrate. As demonstrated for a selected substrate (AA8006), the increased susceptibility is related to the formation of a thin, (electro)chemically active nanocrystalline layer at the surface as a result of the annealing treatment. The corrosion resistance is significantly improved by removing the layer by etching during surface treatment. Possible causes of layer formation and its activity are discussed.
doi_str_mv 10.1149/1.1837797
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ispartof Journal of the Electrochemical Society, 1997-07, Vol.144 (7), p.L196-L197
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1945-7111
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source IOP Publishing Journals
subjects ALUMINIUM BASE ALLOYS
ANNEALING
Applied sciences
COATINGS
CORROSION
Corrosion prevention
CORROSION RESISTANCE
ETCHING
Exact sciences and technology
MATERIALS SCIENCE
Metals. Metallurgy
MORPHOLOGY
title Formation of nanocrystalline surface layers by annealing and their role in filiform corrosion of aluminum sheet
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