Characterization of corrosion products formed on Ni 2.4wt%–Cu 0.5wt%–Cr 0.5wt% weathering steel exposed in marine atmospheres - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Corrosion Science Année : 2014

Characterization of corrosion products formed on Ni 2.4wt%–Cu 0.5wt%–Cr 0.5wt% weathering steel exposed in marine atmospheres

Résumé

Abstract Weathering steel manufactured with high concentrations of copper (0.5 wt%), chromium (0.5 wt%) and nickel (2.4 wt%) was studied with the aim of furthering knowledge on corrosion product characterization and performance in marine environments. Specimens exposed for two years in a rural atmosphere and two marine environments were characterized by optical microscopy, SEM/EDS, XRD and Raman spectroscopy and corrosion rates measured. The main phases found were ferrihydrite, maghemite and goethite in the inner corrosion layer, and lepidocrocite in the outer layer. Cu and Ni were homogeneously distributed while Cr tended to be concentrated in the inner layer.
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hal-01157705 , version 1 (28-05-2015)

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Heidis Cano, Delphine D. Neff, Manuel Morcillo, Philippe Dillmann, Ivan Diaz, et al.. Characterization of corrosion products formed on Ni 2.4wt%–Cu 0.5wt%–Cr 0.5wt% weathering steel exposed in marine atmospheres. Corrosion Science, 2014, 87, pp.438-451. ⟨10.1016/j.corsci.2014.07.011⟩. ⟨hal-01157705⟩
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