Long-term alteration processes of iron fasteners extracted from archaeological shipwrecks aged in biologically active waterlogged media - Economie industrielle (CERNA)
Article Dans Une Revue Corrosion Science Année : 2021

Long-term alteration processes of iron fasteners extracted from archaeological shipwrecks aged in biologically active waterlogged media

Résumé

Waterlogged woods and iron reinforcements extracted from archaeological shipwrecks were studied. The corrosion mechanisms of the reinforcements were investigated by analyzing the corrosion products using a multi-technique approach. The woods contained pyrite and greigite. The reinforcements showing different degradation states were corroded into siderite, chukanovite, mackinawite, pyrite and greigite. Then, two half-nails were soaked in neutral and acidic Na 2 S solutions. Mackinawite precipitated only in neutral conditions. Through this study, the natural mackinawite-to-pyrite evolution process induced by a long-term exposure to sulfides is highlighted. This work also shows that iron sulfides can result from complex processes implying other sulfide-sensitive phases.

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Dates et versions

hal-04692116 , version 1 (09-09-2024)

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Céline Rémazeilles, François Lévêque, Egle Conforto, Philippe Refait. Long-term alteration processes of iron fasteners extracted from archaeological shipwrecks aged in biologically active waterlogged media. Corrosion Science, 2021, 181, pp.109231. ⟨10.1016/j.corsci.2020.109231⟩. ⟨hal-04692116⟩
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