FIB/SEM study of AA2024 corrosion under a seawater drop: Part I
Author(s)
King, Peter C
Cole, Ivan S
Corrigan, Penny A
Hughes, Anthony E
Muster, Tim H
Griffith University Author(s)
Year published
2011
Metadata
Show full item recordAbstract
The role of metallic microstructure in 0.5 μl seawater droplet corrosion of aluminium alloy 2024 (AA2024) has been investigated. Focussed ion beam/scanning electron microscopy (FIB/SEM) was used to determine the relationships between the corrosion products formed at specific sites at the surface and the underlying attack mechanisms. Dealloying of S-phase particles, matrix/particle interfacial attack and grain boundary attack were the predominant attack modes. Cooperative behaviour between IM particles was made possible by networks of etched grain boundaries, which provided a connecting path.The role of metallic microstructure in 0.5 μl seawater droplet corrosion of aluminium alloy 2024 (AA2024) has been investigated. Focussed ion beam/scanning electron microscopy (FIB/SEM) was used to determine the relationships between the corrosion products formed at specific sites at the surface and the underlying attack mechanisms. Dealloying of S-phase particles, matrix/particle interfacial attack and grain boundary attack were the predominant attack modes. Cooperative behaviour between IM particles was made possible by networks of etched grain boundaries, which provided a connecting path.
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Journal Title
Corrosion Science
Volume
53
Issue
3
Subject
Civil engineering
Materials engineering
Materials engineering not elsewhere classified
Mechanical engineering