Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7895849 | Corrosion Science | 2014 | 7 Pages |
Abstract
Samples of 316L were exposed at 325 °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 18O in the oxide scale: Dsc = (9 ± 1)·10â17 cm2 sâ1. 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.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Marie Dumerval, Stéphane Perrin, Loïc Marchetti, Michel Tabarant, François Jomard, Yves Wouters,