| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Refait, Philippe
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2022Influence of Organic Matter/Bacteria on the Formation and Transformation of Sulfate Green Rustcitations
- 2021Mechanisms of localized corrosion of carbon steel associated with magnetite/mackinawite layers in a cement groutcitations
- 2021Formation of iron sulfides on carbon steel in a specific cement grout designed for radioactive waste repository and associated corrosion mechanismscitations
- 2019Post-treatment Study of Iron/Sulfur-containing Compounds in the Wreck of Lyon Saint-Georges 4 (Second Century ACE)citations
- 2018Abiotically or microbially mediated transformations of magnetite by sulphide species: The unforeseen role of nitrate-reducing bacteriacitations
- 2016Localized corrosion of carbon steel in marine media: Galvanic coupling and heterogeneity of the corrosion product layercitations
- 2015Corrosion and cathodic protection of carbon steel in the tidal zone: Products, mechanisms and kineticscitations
- 2004Characterisation of calcareous deposits by electrochemical methods: role of sulphates, calcium concentration and temperaturecitations
Places of action
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article
Formation of iron sulfides on carbon steel in a specific cement grout designed for radioactive waste repository and associated corrosion mechanisms
Abstract
International audience ; Carbon steel coupons were buried in a specific low-pH cement grout designed for radioactive waste disposal and left 6 months in anoxic conditions at 80 °C. The corrosion product layers were analyzed by µ-Raman spectroscopy, XRD, and SEM. They proved to be mainly composed of iron sulfides, with magnetite as a minor phase, mixed with components of the grout. Average corrosion rates were estimated by weight loss measurements between 3 and 6 µm yr−1. Corrosion profiles revealed local degradations with a depth up to 10 µm. It is assumed that the heterogeneity of the corrosion product layer, mainly composed of conductive compounds (FeS, Fe3S4, and Fe3O4), promotes the persistence of corrosion cells that may lead to locally aggravated degradations of the metal. New cement grouts, characterized by a slightly higher pH and a lower sulfide concentration, should then be designed for the considered application.