Improvement of Vickers hardness measurement on SWNT/Al2O3 composites consolidated by spark plasma sintering

Dense alumina composites with different carbon nanotube content were prepared by colloidal processing and consolidated by Spark Plasma Sintering (SPS). Single-wall carbon nanotubes (SWNTs) were distributed at grain boundaries and also into agglomerates homogeneously dispersed. Carrying out Vickers h...

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Detalles Bibliográficos
Autores: Morales-Rodríguez, A., Gallardo-López, Ángela, Fernández-Serrano, A., Poyato, Rosalía, Muñoz, A., Domínguez-Rodríguez, Alejandro
Tipo de recurso: artículo
Fecha de publicación:2014
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/102095
Acceso en línea:http://hdl.handle.net/10261/102095
Access Level:acceso abierto
Palabra clave:Spark plasma sintering
Nanocomposites
Alumina
Carbon nanotubes
Vickers hardness
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spelling Improvement of Vickers hardness measurement on SWNT/Al2O3 composites consolidated by spark plasma sinteringMorales-Rodríguez, A.Gallardo-López, ÁngelaFernández-Serrano, A.Poyato, RosalíaMuñoz, A.Domínguez-Rodríguez, AlejandroSpark plasma sinteringNanocompositesAluminaCarbon nanotubesVickers hardnessDense alumina composites with different carbon nanotube content were prepared by colloidal processing and consolidated by Spark Plasma Sintering (SPS). Single-wall carbon nanotubes (SWNTs) were distributed at grain boundaries and also into agglomerates homogeneously dispersed. Carrying out Vickers hardness tests on the cross-section surfaces instead of top (or bottom) surfaces has shown a noticeable increase in the reliability of the hardness measurements. This improvement has been mainly attributed to the different morphology of carbon nanotube agglomerates, which however does not seem to affect the Vickers hardness value. Composites with lower SWNT content maintain the Vickers hardness of monolithic alumina, whereas it significantly decreases for the rest of compositions. The decreasing trend with increasing SWNT content has been explained by the presence of higher SWNT quantities at grain boundaries. Based on the results obtained, a method for optimizing Vickers hardness tests performance on SWNT/Al2O3 composites sintered by SPS is proposed. © 2014 Elsevier Ltd.Peer ReviewedElsevier2014201420142014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/102095reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1020952026-05-22T06:33:51Z
dc.title.none.fl_str_mv Improvement of Vickers hardness measurement on SWNT/Al2O3 composites consolidated by spark plasma sintering
title Improvement of Vickers hardness measurement on SWNT/Al2O3 composites consolidated by spark plasma sintering
spellingShingle Improvement of Vickers hardness measurement on SWNT/Al2O3 composites consolidated by spark plasma sintering
Morales-Rodríguez, A.
Spark plasma sintering
Nanocomposites
Alumina
Carbon nanotubes
Vickers hardness
title_short Improvement of Vickers hardness measurement on SWNT/Al2O3 composites consolidated by spark plasma sintering
title_full Improvement of Vickers hardness measurement on SWNT/Al2O3 composites consolidated by spark plasma sintering
title_fullStr Improvement of Vickers hardness measurement on SWNT/Al2O3 composites consolidated by spark plasma sintering
title_full_unstemmed Improvement of Vickers hardness measurement on SWNT/Al2O3 composites consolidated by spark plasma sintering
title_sort Improvement of Vickers hardness measurement on SWNT/Al2O3 composites consolidated by spark plasma sintering
dc.creator.none.fl_str_mv Morales-Rodríguez, A.
Gallardo-López, Ángela
Fernández-Serrano, A.
Poyato, Rosalía
Muñoz, A.
Domínguez-Rodríguez, Alejandro
author Morales-Rodríguez, A.
author_facet Morales-Rodríguez, A.
Gallardo-López, Ángela
Fernández-Serrano, A.
Poyato, Rosalía
Muñoz, A.
Domínguez-Rodríguez, Alejandro
author_role author
author2 Gallardo-López, Ángela
Fernández-Serrano, A.
Poyato, Rosalía
Muñoz, A.
Domínguez-Rodríguez, Alejandro
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Spark plasma sintering
Nanocomposites
Alumina
Carbon nanotubes
Vickers hardness
topic Spark plasma sintering
Nanocomposites
Alumina
Carbon nanotubes
Vickers hardness
description Dense alumina composites with different carbon nanotube content were prepared by colloidal processing and consolidated by Spark Plasma Sintering (SPS). Single-wall carbon nanotubes (SWNTs) were distributed at grain boundaries and also into agglomerates homogeneously dispersed. Carrying out Vickers hardness tests on the cross-section surfaces instead of top (or bottom) surfaces has shown a noticeable increase in the reliability of the hardness measurements. This improvement has been mainly attributed to the different morphology of carbon nanotube agglomerates, which however does not seem to affect the Vickers hardness value. Composites with lower SWNT content maintain the Vickers hardness of monolithic alumina, whereas it significantly decreases for the rest of compositions. The decreasing trend with increasing SWNT content has been explained by the presence of higher SWNT quantities at grain boundaries. Based on the results obtained, a method for optimizing Vickers hardness tests performance on SWNT/Al2O3 composites sintered by SPS is proposed. © 2014 Elsevier Ltd.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/102095
url http://hdl.handle.net/10261/102095
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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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score 15.81155

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