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Radiolysis of water in the vicinity of passive surfaces

S. Moreau 1 M. Fenart 2 J.P. Renault 1 
1 LIONS - Laboratoire Interdisciplinaire sur l'Organisation Nanométrique et Supramoléculaire
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
2 LECA - Laboratoire d'Etude de la Corrosion Aqueuse
SCCME - Service de la Corrosion et du Comportement des Matériaux dans leur Environnement : DEN/DPC/SCCME/LECA
Abstract : Porous metals were used to describe the water radiolysis in the vicinity of metal surfaces. The hydroxyl radical production under gamma irradiation was measured by benzoate scavenging in water confined in a 200nm porous Ni base alloy or in Stainless steel. The presence of the metallic surfaces changed drastically the HO° production level and lifetime. The solvated electron production was measured via glycylglycine scavenging for Stainless steel and was found to be significantly smaller than hydroxyl production. These observations imply that interfacial radiolysis may deeply impact the corrosion behavior of the SS and Ni based alloys.
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Submitted on : Wednesday, April 4, 2018 - 4:35:07 PM
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S. Moreau, M. Fenart, J.P. Renault. Radiolysis of water in the vicinity of passive surfaces. Corrosion Science, Elsevier, 2014, 83, pp.255 - 260. ⟨10.1016/j.corsci.2014.02.024⟩. ⟨cea-01758652⟩



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