Abstract
In order to test the applicability of 8090-T81 alloy in a marine environment, its corrosion behaviour was investigated in natural sea water at 25°C. Corrosion resistance was examined using free corrosion and electrochemical tests. The swface film was characterised by ir spectroscopy, X-ray microdijfractometry, and X-ray photoelectron spectroscopy. Microstructural heterogeneity increases susceptibility to localised attack, particularly to crevice corrosion, thus discouraging any marine use of this alloy in a non-protected form.
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