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

e-Archivo Repository

Show simple item record

dc.contributor.author Franco, Eliana
dc.contributor.author Edil Da Costa, César
dc.contributor.author Tsipas, Sophia Alexandra
dc.contributor.author Gordo Odériz, Elena
dc.date.accessioned 2014-10-09T07:49:34Z
dc.date.available 2014-10-09T07:49:34Z
dc.date.issued 2014
dc.identifier.bibliographicCitation International Journal of Refractory Metals and Hard Materials (2014).
dc.identifier.issn 0263-4368
dc.identifier.uri http://hdl.handle.net/10016/19457
dc.description In Press, Accepted Manuscript
dc.description.abstract The 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.
dc.description.sponsorship Spanish government, R&D project MAT2012-38650-C02-01
dc.format.extent 18
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2014 Elsevier Ltd.
dc.subject.other FeAl-cermets
dc.subject.other NbC in situ
dc.subject.other Powder metallurgy
dc.subject.other Thermal analyses
dc.subject.other ThermoCalc®
dc.title Cermets based on FeAl-NbC from composite powders: design of composition and processing
dc.type article
dc.description.status Publicado
dc.relation.publisherversion http://dx.doi.org/10.1016/j.ijrmhm.2014.09.030
dc.subject.eciencia Ingeniería Industrial
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.identifier.doi 10.1016/j.ijrmhm.2014.09.030
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. MAT-2012-38650-C02-01/MITICO
dc.type.version acceptedVersion
dc.identifier.publicationtitle International journal of refractory metals and hard materials
dc.identifier.uxxi AR/0000015621
 Find Full text

Files in this item

*Click on file's image for preview. (Embargoed files's preview is not supported)

This item appears in the following Collection(s)

Show simple item record