Hydrogen absorption associated with the corrosion mechanism of 316L stainless steels in primary medium of Pressurized Water Reactor (PWR) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Corrosion Science Année : 2014

Hydrogen absorption associated with the corrosion mechanism of 316L stainless steels in primary medium of Pressurized Water Reactor (PWR)

Résumé

Samples of 316L were exposed at 325 degrees C to PWR primary water labelled with deuterium and oxygen 18. The SIMS and GD-OES analysis has revealed the presence of deuterium in the internal oxide layer and in the underlying alloy. Two-stage corrosion experiments have shown that the oxygen and hydrogen transport in the oxide layer is not coupled and that the short-circuit diffusion coefficient of O-18 in the oxide scale: D-sc = (9 +/- 1).10(-17) cm(2) s(-1). These results are used to propose a mechanism describing the anionic growth of the protective oxide layer and the concomitant adsorption of hydrogen in the alloy. (C) 2014 Elsevier Ltd. All rights reserved.

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Matériaux
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Dates et versions

hal-01071858 , version 1 (06-10-2014)

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Citer

M. Dumerval, S. Perrin, Loic Marchetti, M. Tabarant, F. Jomard, et al.. Hydrogen absorption associated with the corrosion mechanism of 316L stainless steels in primary medium of Pressurized Water Reactor (PWR). Corrosion Science, 2014, 85, pp.251-257. ⟨10.1016/j.corsci.2014.04.025⟩. ⟨hal-01071858⟩
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