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Surface blistering and flaking of sintered uranium dioxide samples under high dose gas implantation and annealing

hal.structure.identifierCEA
dc.contributor.authorMARTIN, Guillaume
hal.structure.identifierCEA
dc.contributor.authorCARLOT, Gaëlle
hal.structure.identifierConditions Extrêmes et Matériaux : Haute Température et Irradiation [CEMHTI]
dc.contributor.authorDESGARDIN, Pierre
hal.structure.identifierCentre de Recherche sur la Matière Divisée [CRMD]
dc.contributor.authorVAYER, Marylène
hal.structure.identifierInstitut des Sciences de la Terre d'Orléans [ISTO]
dc.contributor.authorRAMBOZ, Claire
hal.structure.identifierConditions Extrêmes et Matériaux : Haute Température et Irradiation [CEMHTI]
dc.contributor.authorSAUVAGE, Thierry
hal.structure.identifierInterface Physique et Chimie pour le Vivant [IPCV]
dc.contributor.authorMORETTO, Philippe
hal.structure.identifierLaboratoire d'Etudes des Eléments Légers [LEEL - UMR 3685]
dc.contributor.authorKHODJA, Hicham
hal.structure.identifierCEA
dc.contributor.authorGARCIA, Philippe
dc.date.issued2012
dc.date.conference2012
dc.description.abstractEnHigh helium contents will be generated within minor actinide doped uranium dioxide blankets which could be used in fourth generation reactors. In this framework, it is essential to improve our understanding of the type of damage which a pellet could incur as a result of extensive helium build-up. This paper is an attempt at tackling this issue. Sintered uranium dioxide disks have been implanted with helium ions then annealed at various temperatures. Above a concentration of 0.4 at.% and above 1000°C, optical images of the sample surface revealed swollen grains and extensive areas which have exfoliated. Nuclear reaction microanalyses and atomic force microscopy observations were performed to demonstrate that helium has substantially precipitated within the swollen grains. Massive precipitation of the gas leads under these conditions to sample surface blistering which appears to precede flaking. Deuterium ion irradiations have also been performed at ambient and a direct flaking of the sample surface was observed, but for this phenomenon to be observed required much higher doses than in the He study, indicating that temperature could be an essential ingredient for gas to migrate and cause extensive precipitation. Such phenomena could possibly lead to degradation of the fuel.
dc.language.isoen
dc.source.titleDefects and Diffusion Forum
dc.subject.enuranium dioxide
dc.subject.enhelium
dc.subject.enhydrogen
dc.subject.enimplantation
dc.subject.enblistering
dc.subject.enflaking
dc.title.enSurface blistering and flaking of sintered uranium dioxide samples under high dose gas implantation and annealing
dc.typeCommunication dans un congrès
dc.identifier.doi10.4028/www.scientific.net/DDF.323-325.185
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Minéralogie
bordeaux.page185-190
bordeaux.volume323 - 325
bordeaux.countryFR
bordeaux.title.proceedingDefects and Diffusion Forum
bordeaux.peerReviewedoui
hal.identifierinsu-00689540
hal.version1
hal.invitednon
hal.proceedingsoui
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//insu-00689540v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Defects%20and%20Diffusion%20Forum&rft.date=2012&rft.volume=323%20-%20325&rft.spage=185-190&rft.epage=185-190&rft.au=MARTIN,%20Guillaume&CARLOT,%20Ga%C3%ABlle&DESGARDIN,%20Pierre&VAYER,%20Maryl%C3%A8ne&RAMBOZ,%20Claire&rft.genre=unknown


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