Publication:
Novel colloidal approach for the microstructural improvement in Ti(C,N)/FeNi cermets

Simple item page
dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Tecnología de Polvoses
dc.contributor.authorDios Pérez, Miguel de
dc.contributor.authorGonzález, Z.es
dc.contributor.authorAlvaredo Olmos, Paulaes
dc.contributor.authorBermejo, Raúles
dc.contributor.authorGordo Odériz, Elenaes
dc.contributor.authorFerrari, Begoñaes
dc.date.accessioned2018-04-16T13:18:20Z
dc.date.available2019-11-15T23:10:05Z
dc.date.issued2017-11-15
dc.description.abstractIn this work, the combination of colloidal and powder metallurgy techniques was proposed as an alternative route to produce Ti(C,N)-based cermets with a 15-20 vol% of Fe/Ni alloy (85/15 wt%) as metal matrix. The novelty of this processing route is based in the mixture of fine powders (1;-3 µm) in suspension which promotes the uniformity of the phase distribution and consequently its reactivity, leading to 99.9% dense cermets with 1300 Vickers Hardness (HV30). The preparation of colloidal and chemically stable slurries of non-oxide and metal powders in aqueous media is a key step of the process. Highly concentrated aqueous slurries of Ti(C,N), Fe, Ni and C powders were prepared and mixed. Then bulk pieces were shaped by Slip casting (SC), Slip Casting + Cold Isostatic Pressing (SC-CIP) and Spray-Dry + Uniaxial Pressing of the obtained spherical granules (SDP). The composite formulation and the thermal treatment were optimized to prevent Ni sublimation during sintering as well as to improve liquid phase sintering in terms of wetting and reactivity among well packed particles. The effective dispersion of the slurry and the synergistic effect of combined techniques yielded the preparation of reliable materials by the SDP process with 15 wt% of FeNi with the addition of 0.5 wt% of C. The optimization of the composite formulation and the processing parameters improves both density and hardness of a finer microstructure of the composite after a short sintering treatment (120 min) at 1450 °C in vacuum.en
dc.description.sponsorshipThe authors acknowledge the financial support from the Spanish Government through the projects MAT2015-70780-C4-1-P and MAT2015-70780-C4-2-P, and the Regional Government of Madrid through the program MULTIMAT CHALLENGE, ref. S2013/MIT-2862. M. Dios acknowledges MINECO through the grant BES-2013-065760en
dc.format.extent11es
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationJournal of Alloys and Compounds, 724, (Nov. 2017), 327-338.en
dc.identifier.doihttps://doi.org/10.1016/j.jallcom.2017.07.034
dc.identifier.issn0925-8388
dc.identifier.publicationfirstpage327es
dc.identifier.publicationlastpage338es
dc.identifier.publicationtitleJournal of Alloys and Compoundsen
dc.identifier.publicationvolume724es
dc.identifier.urihttps://hdl.handle.net/10016/26650
dc.identifier.uxxiAR/0000021107
dc.language.isoengen
dc.publisherElsevieres
dc.relation.ispartofhttp://hdl.handle.net/10016/27083
dc.relation.projectIDGobierno de España. MAT2015-70780-C4-1-Pes
dc.relation.projectIDGobierno de España. MAT2015-70780-C4-2-Pes
dc.relation.projectIDComunidad de Madrid. S2013/MIT-2862/MULTIMAT-CHALLENGEes
dc.relation.projectIDGobierno de España. BES-2013-065760es
dc.rights© 2017 Elsevier B.V. All rights reserveden
dc.rights.accessRightsopen accessen
dc.subject.ecienciaMaterialeses
dc.subject.otherColloidal processingen
dc.subject.otherPowder metallurgical processingen
dc.subject.otherTi(C,N)-based cermetsen
dc.subject.otherFe/Nies
dc.subject.otherHardnessen
dc.titleNovel colloidal approach for the microstructural improvement in Ti(C,N)/FeNi cermetsen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
novel_JAC_2017_ps.pdf
Size:
998.83 KB
Format:
Adobe Portable Document Format
Download
Collections
DCIMIQ - CIMIQ - TP - Artículos de Revistas