Surface modification of 5083 aluminum-magnesium induced by marine microorganisms

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 SE...

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Bibliographic Details
Main Author: Jaume, Julien (author)
Other Authors: Marques, Maria João (author), Délia, Marie-Line (author), Basséguy, Régine (author)
Format: article
Language:eng
Published: 2022
Subjects:
Materials
Corrosion
Aluminium
Steel
Estuarine Environment
Online Access:http://hdl.handle.net/10400.9/3766
Country:Portugal
Oai:oai:repositorio.lneg.pt:10400.9/3766
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Summary: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.

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