Abstract : During the corrosion in primary water of zirconium alloys, a fraction of hydrogen from the water diffuses through the oxide into the alloy. To better understand the hydriding process, isotopic tracers and SIMS experiments were performed on oxides grown on Zircaloy-4 alloy under simulated primary water conditions. Results showed the oxide film in pre-transition is divided into two sub-layers, an external one, highly permeable to hydrogen and an inner protective one. Thermal Desorption Spectroscopy analyses revealed two interaction sites of hydrogen, located in each oxide sublayer. Apparent diffusion coefficients of hydrogen in both oxide sublayers were estimated with different methods.
https://hal-cea.archives-ouvertes.fr/cea-01465798
Contributeur : Serge Palacin
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Soumis le : lundi 13 février 2017 - 10:27:07
Dernière modification le : lundi 15 octobre 2018 - 16:36:13
Document(s) archivé(s) le : dimanche 14 mai 2017 - 12:20:18
