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dc.rights.licenseopenen_US
dc.relation.isnodoubleec967b9a-e196-4b7b-bff4-8fb4d9b5e15c*
dc.relation.isnodouble3c3a8944-b47d-447d-95b1-b649c4e615bd*
hal.structure.identifierLaboratoire des Composites Thermostructuraux [LCTS]
dc.contributor.authorROGER, Jerome
hal.structure.identifierLaboratoire des Composites Thermostructuraux [LCTS]
dc.contributor.authorSALLES, M.
dc.date.accessioned2021-06-23T09:52:16Z
dc.date.available2021-06-23T09:52:16Z
dc.date.issued2020-12-01
dc.identifier.issn0925-8388en_US
dc.identifier.urioai:crossref.org:10.1016/j.jallcom.2020.158453
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/79270
dc.description.abstractEnTiSi2/SiC composites are promising materials for high temperature applications. The synthesis of these composites by metal infiltration is an interesting method that is not still mastered. This study aims at identifying the thermodynamic and kinetic processes involved during the synthesis of TiSi2/SiC composites by capillary infiltration of liquid silicon or Si-Ti molten alloys in porous compacts. Three cases were examined to produce dense TiSi2/SiC materials: 1) the infiltration of molten TiSi2 in pure SiC compacts at 1550 °C, 2) the reactive infiltration of the molten eutectic Ti0.16Si0.84 alloy in SiC + TiC compacts at 1380 °C, and 3) the reactive infiltration of pure liquid silicon in SiC + TiC compacts at 1450 °C. The effect of a TiC excess was considered for each reactive case. The infiltration kinetics and the filling percentage were measured from the monitoring of the weight gain increase. The decisive role played by thermodynamics on the infiltration progress is confirmed. It induces the dissolution and diffusion of Ti atoms from TiC which results in the presence of free silicon in the infiltrated areas. Excess content of TiC is not found favorable to the infiltration. This original study based on thermodynamic calculations and kinetic measurements at high temperatures provides decisive results for a complete understanding and improvements of the examined processes.
dc.language.isoENen_US
dc.sourcecrossref
dc.subject.enA ceramics
dc.subject.enA composite materials
dc.subject.enB liquid-solid reactions
dc.subject.enC diffusion
dc.subject.enC phase diagrams
dc.subject.enC microstructure
dc.title.enKinetics of liquid metal infiltration in TiC-SiC or SiC porous compacts
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.jallcom.2020.158453en_US
dc.subject.halChimie/Matériauxen_US
bordeaux.journalJournal of Alloys and Compoundsen_US
bordeaux.page158453en_US
bordeaux.volume860en_US
bordeaux.hal.laboratoriesLaboratoire des Composites Thermo Structuraux (LCTS) - UMR 5801en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.institutionCEAen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.exportfalse
workflow.import.sourcedissemin
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