Stabilization treatment of cultural heritage artefacts : In situ monitoring of marine iron objects dechlorinated in alkali solution - Archive ouverte HAL Access content directly
Journal Articles Corrosion Science Year : 2017

Stabilization treatment of cultural heritage artefacts : In situ monitoring of marine iron objects dechlorinated in alkali solution

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Abstract

The preservation of archaeological iron artefacts necessitates stabilization treatments. For this study, such treatments were applied, in aerated and deaerated NaOH solutions, to Roman iron bars excavated from a marine site in order to understand the evolution of corrosion layers composed of ferrous hydroxychloride β-Fe2(OH)3Cl. Their transformation was monitored in situ by micro-diffraction under synchrotron radiation and characterized ex situ using multi-scale complementary analytical tools. The formation of transient phases such as ferrous hydroxide Fe(OH)2 was identified in both media and chlorinated green rust GR(Cl−) occurred in aerated solutions, showing the influence of dissolved oxygen on the transformation processes.
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Dates and versions

cea-01672808 , version 1 (27-12-2017)

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Florian Kergourlay, S. Reguer, Delphine D. Neff, E. Foy, F. Picca, et al.. Stabilization treatment of cultural heritage artefacts : In situ monitoring of marine iron objects dechlorinated in alkali solution. Corrosion Science, 2017, 132, pp.21-34. ⟨10.1016/j.corsci.2017.12.028⟩. ⟨cea-01672808⟩
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