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Article Dans Une Revue Corrosion Science Année : 2005

Corrosion of iron archaeological artefacts in soil: characterisation of the corrosion system

Résumé

This paper presents a study made on 40 iron archaeological artefacts buried in soil during several centuries. Samples were taken with the adhering soil and cross-sections were made. The used characterisation techniques are optical and electronic microscopies, EDS coupled to SEM, EPMA, micro-XRD under synchrotron radiation, micro-Raman spectrometry. A specific vocabulary is proposed to describe the corrosion layout. The most identified corrosion layout is made of several ten micrometers zones of magnetite and/or maghemite embedded in a goethite matrix. A corrosion mechanism is proposed in order to explain this profile. When the soil water contains more chlorine or carbonates, some specific corrosion product appear as akaganeite, oxychlorides and siderite.

Dates et versions

hal-01689122 , version 1 (20-01-2018)

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Delphine D. Neff, Philippe Dillmann, Ludovic Bellot-Gurlet, G. Beranger. Corrosion of iron archaeological artefacts in soil: characterisation of the corrosion system. Corrosion Science, 2005, 47 (2), pp.515 - 535. ⟨10.1016/j.corsci.2004.05.029⟩. ⟨hal-01689122⟩
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