Corrosion mechanisms of 316L stainless steel in supercritical water: The significant effect of work hardening induced by surface finishes
Type
Articles dans des revues avec comité de lectureAuthor

234539 CEA Cadarache
300351 Conservatoire National des Arts et Métiers [CNAM] [CNAM]
92792 CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) [CEA-DES (ex-DEN)]

92792 CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) [CEA-DES (ex-DEN)]
300351 Conservatoire National des Arts et Métiers [CNAM] [CNAM]
Date
2019Journal
Corrosion ScienceAbstract
The oxidation of 316 L stainless steel in hydrogenated supercritical water at 600 °C is strongly dependent on the effects of work hardening induced by surface finishes. The oxide scale formed under these conditions is always double-layered with an external layer of Fe-rich oxides. However, when a hardening threshold is reached, a switch in oxidation mechanisms leads to a considerable thinning of the oxide scale. This thinning results from the formation of a Cr-rich internal oxide layer that acts as a diffusion barrier against ionic species responsible for its growth but also against Fe cations implied in the external layer growth.
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