TAILIEUCHUNG - Evaluation of cobalt free coatings as hardfacing material candidates in sodium-cooled fast reactor and effect of oxygen in sodium on the tribological behaviour

The feedback produced by operating Sodium-cooled Fast Reactors (SFRs) has shown the importance of material tribological properties. Where galling or adhesive wear cannot be allowed, hardfacing alloys, known to be galling-resistant coatings, are usually applied on rubbing surfaces. | Evaluation of cobalt free coatings as hardfacing material candidates in sodium-cooled fast reactor and effect of oxygen in sodium on the tribological behaviour EPJ Nuclear Sci. Technol. 5 10 2019 Nuclear Sciences F. Rouillard et al. published by EDP Sciences 2019 amp Technologies https epjn 2019025 Available online at https REGULAR ARTICLE Evaluation of cobalt free coatings as hardfacing material candidates in sodium-cooled fast reactor and effect of oxygen in sodium on the tribological behaviour Fabien Rouillard1 Brigitte Duprey1 Jean-Louis Courouau1 Raphaël Robin1 Pascal Aubry2 Cécile Blanc2 Michel Tabarant2 Hicham Maskrot2 Laetitia Nicolas3 Martine Blat-Yrieix4 Gilles Rolland4 and Thorsten Marlaud5 1 Den-Service de la Corrosion et du Comportement des Matériaux dans leur Environnement SCCME CEA Université Paris-Saclay 91191 Gif-sur-Yvette France 2 Den-Service d Etudes Analytiques et de Réactivtiés des Surfaces SEARS CEA Université Paris-Saclay 91191 Gif-sur-Yvette France 3 Den-Service de Recherches Métallurgiques Appliquées SRMA CEA Université Paris-Saclay 91191 Gif-sur-Yvette France 4 EDF R amp D Département Matériaux et Mécanique des Composants Les Renardières 77818 Moret Loing Orvanne France 5 FRAMATOME DTIML 10 rue Juliette Récamier 69006 Lyon France Received 11 February 2019 Received in final form 20 May 2019 Accepted 2 August 2019 Abstract. The feedback produced by operating Sodium-cooled Fast Reactors SFRs has shown the importance of material tribological properties. Where galling or adhesive wear cannot be allowed hardfacing alloys known to be galling-resistant coatings are usually applied on rubbing surfaces. The most used coating is the cobalt-base alloy named Stellite 6 because of its outstanding friction and wear behaviour. Nevertheless cobalt is an element which activates in the reactor leading to complex management of safety during reactor maintenance and mainly decommissioning. As a consequence a collaborative work .

• Năng lượng
• Sodium cooled Fast Reactors
• Material tribological properties
• Galling resistant coatings
• Cobalt free coatings
• Hardfacing material candidates