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Flash Spark Plasma Sintering of 3YSZ: Modified sintering pathway and impact on grain boundary formation

hal.structure.identifierCentre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
dc.contributor.authorHÉRISSON DE BEAUVOIR, Thomas
hal.structure.identifierCentre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
dc.contributor.authorGHOMARI, Zakaria
hal.structure.identifierCentre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
dc.contributor.authorCHEVALLIER, Geoffroy
hal.structure.identifierCentre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
dc.contributor.authorFLAUREAU, Andréas
hal.structure.identifierCentre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
dc.contributor.authorWEIBEL, Alicia
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorELISSALDE, Catherine
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMAUVY, Fabrice
hal.structure.identifierTechnion - Israel Institute of Technology [Haifa]
dc.contributor.authorCHAIM, Rachman
hal.structure.identifierCentre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
dc.contributor.authorESTOURNÈS, Claude
dc.date.issued2021
dc.identifier.issn0955-2219
dc.description.abstractEnYttria stabilized zirconia (3 mol% YSZ) ceramics were prepared by Flash-SPS, while allowing high heating rates up to 200°C/s, which led to the extremely fast densification within a few seconds. The high heating rates had strong impact on sintering mechanisms, in terms of densification and grain growth. While the specimens ended with 5 to 15 vol% porosity and limited grain growth (< 350 nm), their hardness is higher than fully dense counterpart SPSed ceramics. Using the sintering trajectories, microstructural observations, and impedance spectroscopy, we highlight altered sintering mechanism which resulted in very thin grain boundaries compared to SPS. It appears that densification is largely advanced at grain boundary interfaces, with no residual nano-pores at the grain junctions, where some pores with size comparable to grain size were present. This opens up opportunities for the fabrication of porous lightweight ceramics with good mechanical properties.
dc.language.isoen
dc.publisherElsevier
dc.subject.enFlash-SPS
dc.subject.enGrain boundary
dc.subject.enZirconia
dc.title.enFlash Spark Plasma Sintering of 3YSZ: Modified sintering pathway and impact on grain boundary formation
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jeurceramsoc.2021.08.013
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of the European Ceramic Society
bordeaux.page7762-7770
bordeaux.volume41
bordeaux.issue15
bordeaux.peerReviewedoui
hal.identifierhal-03373353
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03373353v1
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