Iron corrosion in archaeological context: Structural refinement of the ferrous hydroxychloride β-Fe$_2$ (OH)$_3$ Cl

Abstract : Ferrous hydroxysalts are found in corrosion layers of archaeological ferrous objects extracted from oxygen-poor environments. The structure of synthetic and natural β-Fe$_2$ (OH)$_3$ Cl was investigated by X-ray absorption spectroscopy and X-ray diffraction. The local environments of Cl- and Fe$^{2+}$ were precisely determined showing the same structure around Cl- and Fe$^{2+}$ atoms whatever the natural or synthesized phase. The crystalline structure was refined confirming the rhombohedral unit cell and R-3m space group. However slight differences observed for the structural parameters and on XRD patterns suggested different crystallite size, strain effects and the influence of the crystallization process.
Type de document :
Article dans une revue
Corrosion Science, Elsevier, 2015, 100, pp.589. 〈10.1016/j.corsci.2015.08.035〉
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https://hal-cea.archives-ouvertes.fr/cea-01635529
Contributeur : Serge Palacin <>
Soumis le : mercredi 15 novembre 2017 - 11:59:51
Dernière modification le : vendredi 14 septembre 2018 - 09:56:02

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Solenn Reguer, François Mirambet, Céline Remazeilles, Delphine Vantelon, Florian Kergourlay, et al.. Iron corrosion in archaeological context: Structural refinement of the ferrous hydroxychloride β-Fe$_2$ (OH)$_3$ Cl. Corrosion Science, Elsevier, 2015, 100, pp.589. 〈10.1016/j.corsci.2015.08.035〉. 〈cea-01635529〉

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