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Journal Articles Corrosion Science Year : 2023

Corrosion behaviour of the microbially modified surface of 5083 aluminium alloy

Abstract

The influence of microorganism-induced surface modifications on the corrosion behaviour of 5083 H11 aluminium alloy was studied. Pre-immersion in natural seawater (between 15 days and 2 months) led to the growth of a dense oxy-hydroxyde layer on the AA5083 surface. This layer led to a decrease in the cathodic and corrosion current densities, and an increase in the passivity domain on the polarisation curves plotted in chloride-containing sulphate solution for pre-immersed samples compared to bare samples. This improvement in the corrosion behaviour of AA5083 depended on the alloy microstructure, and the sunlight exposure during the pre-immersion in natural seawater.
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Dates and versions

hal-04061709 , version 1 (24-10-2023)

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C. Nkoua, Claudie Josse, A. Proietti, Régine Basséguy, Christine Blanc. Corrosion behaviour of the microbially modified surface of 5083 aluminium alloy. Corrosion Science, 2023, 210, pp.110812. ⟨10.1016/J.CORSCI.2022.110812⟩. ⟨hal-04061709⟩
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