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Cermets based on FeAl-NbC from composite powders: design of composition and processing

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dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Tecnología de Polvoses
dc.contributor.authorFranco, Eliana
dc.contributor.authorEdil Da Costa, César
dc.contributor.authorTsipas, Sophia Alexandra
dc.contributor.authorGordo Odériz, Elena
dc.date.accessioned2014-10-09T07:49:34Z
dc.date.available2014-10-09T07:49:34Z
dc.date.issued2014
dc.descriptionIn Press, Accepted Manuscripten
dc.description.abstractThe aim of this work is the design, processing and characterization of a metal&-ceramic composite (cermet) with an iron &- aluminum alloy as metallic matrix and NbC as ceramic phase. The cermet is obtained from a composite powder containing in situ formed NbC-rich precipitates on an iron rich metal matrix. The starting powder was supplied by CBMM (Brazil), and it was produced by a synthesis process under development which introduces other metals such as Al, Si and Ti to the composition. Due to the in situ process, good bonding is expected between the carbide and the matrix. However it is necessary to study the processability of those complex particles and the transformations occurring during sintering to get the final microstructure. Thermodynamic studies by means of ThermoCalc® software were performed to predict the phases stable with the starting composition and also the influence of Fe and C additions. Samples were produced by uniaxial pressing and vacuum sintering (PS), and also by Field Assisted Hot Pressing (FAHP). The processing parameters for PS processing, that is, sintering temperature and time were based on themodynamic simulations by ThermoCalc® software together with thermal analysis. The powders were characterized by measuring density, particle size, carbon content and chemical composition; and consolidated samples by density and Vickers hardness. The microstructure and morphology of the powder and consolidated samples was analyzed by SEM. The addition of Fe and both C and Fe to the starting cermet composition provided good results as the final microstructure consisted essentially of NbC and Fe matrix.en
dc.description.sponsorshipSpanish government, R&D project MAT2012-38650-C02-01en
dc.description.statusPublicadoes
dc.format.extent18
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationInternational Journal of Refractory Metals and Hard Materials (2014).en
dc.identifier.doi10.1016/j.ijrmhm.2014.09.030
dc.identifier.issn0263-4368
dc.identifier.publicationtitleInternational journal of refractory metals and hard materialsen
dc.identifier.urihttps://hdl.handle.net/10016/19457
dc.identifier.uxxiAR/0000015621
dc.language.isoenges
dc.publisherElsevieren
dc.relation.projectIDGobierno de España. MAT-2012-38650-C02-01/MITICOes
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.ijrmhm.2014.09.030es
dc.rights© 2014 Elsevier Ltd.es
dc.rights.accessRightsopen access
dc.subject.ecienciaIngeniería Industriales
dc.subject.ecienciaMaterialeses
dc.subject.ecienciaQuímicaes
dc.subject.otherFeAl-cermetsen
dc.subject.otherNbC in situen
dc.subject.otherPowder metallurgyen
dc.subject.otherThermal analysesen
dc.subject.otherThermoCalc®en
dc.titleCermets based on FeAl-NbC from composite powders: design of composition and processingen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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