Surface modification of 5083 aluminum-magnesium induced by marine microorganisms

Jaume, Julien; Marques, Maria João; Délia, Marie-Line; Basseguy, Regine

http://hdl.handle.net/10400.9/3766

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Abstract(s)

ABSTRACT: The influence of microorganisms from a salt marsh in the surface modification of 5083 aluminum alloy (Al-Mg) in seawater was evaluated. An immersion test performed for 50 days in biotic and abiotic conditions, with electrochemical monitoring and surface/cross-section characterization by SEM/EDX and TEM after exposure, showed that microorganisms induced the formation of a homogenous layer on the Al-Mg surface. This layer, which proved to be composed of a doublestructure: a dense, amorphous inner layer and a more porous outer layer, was demonstrated to influence the corrosion resistance of the Al-Mg alloy in seawater.

Keywords

Materials Corrosion Aluminium Steel Estuarine Environment

URI

http://hdl.handle.net/10400.9/3766

Citation

Jaume, J... [et.al.] - Surface modification of 5083 aluminum-magnesium induced by marine microorganisms. In: Corrosion Science, 2022, Vol. 194, article nº 109934