Spark plasma sintering of TiC with TiAly as sintering aid: Mechanisms and microstructures

TiC features an interesting combination of mechanical properties, high-temperature resistance, and lightness, making it an excellent candidate for several applications in harsh environments. However, its sintering to obtain bulk components is extremely challenging. Herein, we show that titanium alum...

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Autores: Rizzi, A., García-Fernández, M., Rodríguez Barbero, Miguel Ángel, De Bona, E., Moreno, Rodrigo, Biesuz, M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/381681
Acceso en línea:http://hdl.handle.net/10261/381681
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85202575301&doi=10.1016%2fj.oceram.2024.100661&partnerID=40&md5=0a00d7ada415e5f01bbc7e0709d2c6cb
Access Level:acceso abierto
Palabra clave:Sintering
SPS
TiAl
TiC
UHTCs
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spelling Spark plasma sintering of TiC with TiAly as sintering aid: Mechanisms and microstructuresRizzi, A.García-Fernández, M.Rodríguez Barbero, Miguel ÁngelDe Bona, E.Moreno, RodrigoBiesuz, M.SinteringSPSTiAlTiCUHTCsTiC features an interesting combination of mechanical properties, high-temperature resistance, and lightness, making it an excellent candidate for several applications in harsh environments. However, its sintering to obtain bulk components is extremely challenging. Herein, we show that titanium aluminide is a promising sintering aid for TiC (5, 10, and 20 vol% were investigated). The aluminide allows the formation of a nearly fully dense component at 1350 °C by spark plasma sintering under 80 MPa. The aluminide forms a grain boundary secondary phase that promotes the Ti diffusion: Ti from TiC can be dissolved within the TiAly at the neck center and precipitate at the neck surface, while C can easily diffuse through the TiC lattice. Higher temperatures cause the extrusion of the aluminide out of the SPS die and its reaction with oxygen impurities. The final microstructure is constituted by nearly pure TiC with isolated alumina pockets at the triple points. © 2024 The AuthorsThe authors are grateful to the JECS Trust for funding the visit of Alessandro Rizzi to the ICV in Madrid, from July until September 2023 (Contract No. 2023340) and to Grant PID2021-124521OB-100 funded by MCIN/AEI/10.13039/501100011033 and "ERDF A way of making Europe".Peer reviewedElsevier BVAgencia Estatal de Investigación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/381681https://www.scopus.com/inward/record.uri?eid=2-s2.0-85202575301&doi=10.1016%2fj.oceram.2024.100661&partnerID=40&md5=0a00d7ada415e5f01bbc7e0709d2c6cbreponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-124521OB-I00Open Ceramicshttps://doi.org/10.1016/j.oceram.2024.100661Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3816812026-05-22T06:33:51Z
dc.title.none.fl_str_mv Spark plasma sintering of TiC with TiAly as sintering aid: Mechanisms and microstructures
title Spark plasma sintering of TiC with TiAly as sintering aid: Mechanisms and microstructures
spellingShingle Spark plasma sintering of TiC with TiAly as sintering aid: Mechanisms and microstructures
Rizzi, A.
Sintering
SPS
TiAl
TiC
UHTCs
title_short Spark plasma sintering of TiC with TiAly as sintering aid: Mechanisms and microstructures
title_full Spark plasma sintering of TiC with TiAly as sintering aid: Mechanisms and microstructures
title_fullStr Spark plasma sintering of TiC with TiAly as sintering aid: Mechanisms and microstructures
title_full_unstemmed Spark plasma sintering of TiC with TiAly as sintering aid: Mechanisms and microstructures
title_sort Spark plasma sintering of TiC with TiAly as sintering aid: Mechanisms and microstructures
dc.creator.none.fl_str_mv Rizzi, A.
García-Fernández, M.
Rodríguez Barbero, Miguel Ángel
De Bona, E.
Moreno, Rodrigo
Biesuz, M.
author Rizzi, A.
author_facet Rizzi, A.
García-Fernández, M.
Rodríguez Barbero, Miguel Ángel
De Bona, E.
Moreno, Rodrigo
Biesuz, M.
author_role author
author2 García-Fernández, M.
Rodríguez Barbero, Miguel Ángel
De Bona, E.
Moreno, Rodrigo
Biesuz, M.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Agencia Estatal de Investigación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Sintering
SPS
TiAl
TiC
UHTCs
topic Sintering
SPS
TiAl
TiC
UHTCs
description TiC features an interesting combination of mechanical properties, high-temperature resistance, and lightness, making it an excellent candidate for several applications in harsh environments. However, its sintering to obtain bulk components is extremely challenging. Herein, we show that titanium aluminide is a promising sintering aid for TiC (5, 10, and 20 vol% were investigated). The aluminide allows the formation of a nearly fully dense component at 1350 °C by spark plasma sintering under 80 MPa. The aluminide forms a grain boundary secondary phase that promotes the Ti diffusion: Ti from TiC can be dissolved within the TiAly at the neck center and precipitate at the neck surface, while C can easily diffuse through the TiC lattice. Higher temperatures cause the extrusion of the aluminide out of the SPS die and its reaction with oxygen impurities. The final microstructure is constituted by nearly pure TiC with isolated alumina pockets at the triple points. © 2024 The Authors
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/381681
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85202575301&doi=10.1016%2fj.oceram.2024.100661&partnerID=40&md5=0a00d7ada415e5f01bbc7e0709d2c6cb
url http://hdl.handle.net/10261/381681
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85202575301&doi=10.1016%2fj.oceram.2024.100661&partnerID=40&md5=0a00d7ada415e5f01bbc7e0709d2c6cb
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-124521OB-I00
Open Ceramics
https://doi.org/10.1016/j.oceram.2024.100661
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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