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Journal articles
New Insights in the Long-Term Atmospheric Corrosion Mechanisms of Low Alloy Steel Reinforcements of Cultural Heritage Buildings
Abstract : Reinforcing clamps made of low alloy steel from the Metz cathedral and corroded outdoors during 500 years were studied by OM, FESEM/EDS, and micro-Raman spectroscopy. The corrosion product layer is constituted of a dual structure. The outer layer is mainly constituted of goethite and lepidocrocite embedding exogenous elements such as Ca and P. The inner layer is mainly constituted of ferrihydrite. The behaviour of the inner layer under conditions simulating the wetting stage of the RH wet/dry atmospheric corrosion cycle was observed by in situ micro-Raman spectroscopy. The disappearance of ferrihydrite near the metal/oxide interface strongly suggests a mechanism of reductive dissolution caused by the oxidation of the metallic substrate and was observed for the first time in situ on an archaeological system.
Cited literature [48 references]
https://hal-cea.archives-ouvertes.fr/cea-01542525
Contributor : Serge Palacin <>
Submitted on : Monday, June 19, 2017 - 6:15:05 PM
Last modification on : Thursday, April 2, 2020 - 10:56:02 AM
Long-term archiving on: : Friday, December 15, 2017 - 5:50:30 PM
Contributor : Serge Palacin <>
Submitted on : Monday, June 19, 2017 - 6:15:05 PM
Last modification on : Thursday, April 2, 2020 - 10:56:02 AM
Long-term archiving on: : Friday, December 15, 2017 - 5:50:30 PM
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materials-10-00670.pdf
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