%0 Journal Article %T Localised corrosion of iron and steel in the Callovo-Oxfordian porewater after 3 months at 120 °C: Characterizations at micro and nanoscale and formation mechanisms %+ IRAMAT - Laboratoire Archéomatériaux et Prévision de l'Altération (IRAMAT-LAPA) %+ Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685) %+ Laboratoire Archéomatériaux et Prévision de l'Altération (LAPA - UMR 3685) %+ Service de la Corrosion et du Comportement des Matériaux dans leur Environnement (SCCME) %+ Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252) %+ Matériaux, Défauts et IRradiations (MADIR) %+ Canadian Light Source Inc. %+ University of Saskatchewan [Saskatoon] (U of S) %A Lotz, Hélène %A Neff, Delphine %A Mercier-Bion, Florence %A Bataillon, Christian %A Dillmann, Philippe %A Gardés, Emmanuel %A Monnet, Isabelle %A Dynes, James %A Foy, Eddy %Z ANR‐11‐EQPX‐0020 %< avec comité de lecture %@ 0010-938X %J Corrosion Science %I Elsevier %V 219 %P 111235 %8 2023 %D 2023 %R 10.1016/j.corsci.2023.111235 %K Steel %K SEM %K Raman %K STXM/XANES %K MET/SAED %K localized corrosion %K nuclear waste repository %Z Chemical SciencesJournal articles %X To investigate the fate of nuclear waste in geologic repositories, corrosion experiments were performed on a ferrito‐pearlitic (P285‐NH) and a ferritic steel (Armco) in a synthetic solution representing the Callovo-Oxfordian porewater for 3-months at 120°C. Corrosion product layers (CPL) were characterized from micro to nanoscale. Local corrosion areas of higher thicknesses were composed of siderite layers with different nano-morphologies, iron silicate, iron sulphate and magnetite. Their formation could be due to local pH variation, but also on metal microstructure (phases location and morphology). Differences in corrosion progress are suggested to be mainly related to differences in porewater chemistry and cathodic sites %G English %2 https://cea.hal.science/cea-04095917/document %2 https://cea.hal.science/cea-04095917/file/LOTZ_2024_NOT-VF.pdf %L cea-04095917 %U https://cea.hal.science/cea-04095917 %~ CEA %~ CNRS %~ UNIV-BM %~ UNIV-ORLEANS %~ INSA-ROUEN %~ UNIV-BM-THESE %~ COMUE-NORMANDIE %~ PUBNIMBE %~ DEN %~ INC-CNRS %~ IRAMIS-NIMBE %~ IRAMIS-CIMAP %~ CEA-UPSAY %~ UNIV-PARIS-SACLAY %~ UNIROUEN %~ ENSICAEN %~ UNICAEN %~ DEN-SACLAY %~ INSA-GROUPE %~ UNIVERSITE-PARIS-SACLAY %~ CIMAP %~ MADIR-CIMAP %~ IRAMIS %~ GS-CHIMIE %~ GS-HUMANITIES-HERITAGE %~ GS-PHYSIQUE %~ TEST2-HALCNRS