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In situ X-ray diffraction study of a TiO2 nanopowder Spark Plasma Sintering under very high pressure

hal.structure.identifierMatériaux, ingénierie et science [Villeurbanne] [MATEIS]
dc.contributor.authorCOTTRINO, Sandrine
hal.structure.identifierInstitut Lumière Matière [Villeurbanne] [ILM]
dc.contributor.authorGAUDISSON, Thomas
hal.structure.identifieriLM - Transport, Nanomagnétisme et Matériaux pour l'Énergie [iLM - ENERGIE]
dc.contributor.authorPAILHES, Stéphane
hal.structure.identifierMatériaux, ingénierie et science [Villeurbanne] [MATEIS]
dc.contributor.authorFERRARA, Emanuela Archina
hal.structure.identifierIRCELYON-C'Durable [CDURABLE]
dc.contributor.authorMISHRA, S.
hal.structure.identifierÉcole Supérieure de Chimie Physique Électronique de Lyon [CPE]
dc.contributor.authorDANIELE, S.
hal.structure.identifierEuropean Synchrotron Radiation Facility [Grenoble] [ESRF]
dc.contributor.authorMÉZOUAR, Mohamed
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorLARGETEAU, Alain
hal.structure.identifierInstitut de minéralogie, de physique des matériaux et de cosmochimie [IMPMC]
dc.contributor.authorLE GODEC, Yann
hal.structure.identifierInstitut Lumière Matière [Villeurbanne] [ILM]
dc.contributor.authorLE FLOCH, Sylvie
dc.date.issued2023
dc.identifier.issn0955-2219
dc.description.abstractEnWe investigated the effect of very high pressure on the sintering temperature, phase transition and the grain growth during Spark Plasma Sintering (SPS) of a 15 nm TiO2 nanopowder. Using in situ synchrotron X-ray diffraction during sintering at 1.5 and 3.5 GPa, we followed the evolution of the crystalline phases and the crystallite size as a function of temperature. In comparison, in the laboratory, SPS experiments were performed on two original facilities: A Paris-Edinburgh press and a high-pressure module adapted to standard SPS equipment. We studied the effect of the pressure on the sintering in the range 76 MPa to 3.5 GPa. We have shown that highly dense nanostructured ceramics can be prepared under very high pressure at low sintering temperatures. At 1 GPa, we limited the grain growth to an average size of 233 nm by heating at only 560 °C, and achieved a relative density of 98 %.
dc.language.isoen
dc.publisherElsevier
dc.subject.enNanopowder TiO2
dc.subject.enIn situ X-ray diffraction
dc.subject.enHigh-pressure spark plasma sintering
dc.subject.enGrain growth
dc.subject.enActivation energy
dc.title.enIn situ X-ray diffraction study of a TiO2 nanopowder Spark Plasma Sintering under very high pressure
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jeurceramsoc.2022.11.037
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of the European Ceramic Society
bordeaux.page2783-2793
bordeaux.volume43
bordeaux.issue7
bordeaux.peerReviewedoui
hal.identifierhal-03943653
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03943653v1
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