Heterocoagulation and SPS sintering of sulfonitric-treated CNT and 8YZ nanopowders

Reinforcement of ceramic composites using carbon nanotubes (CNT) has been extensively studied for materials such as Al2O3, Si3N4 and tetragonal ZrO2. Knowledge concerning CNT composites based on a matrix of cubic zirconia (8YZ) is in short supply, however. This paper presents a study on the addition...

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Autores principales: Gómez, Sofía, Rendtorff Birrer, Nicolás Maximiliano, Aglietti, Esteban Fausto, Sakka, Yoshio, Estili, Mehdi, Suárez, Gustavo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Química
Carbon nanotubes
Composites
Zirconia
Processing
SPS sintering
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/118804
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-118804
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Carbon nanotubes
Composites
Zirconia
Processing
SPS sintering
spellingShingle Química
Carbon nanotubes
Composites
Zirconia
Processing
SPS sintering
Gómez, Sofía
Rendtorff Birrer, Nicolás Maximiliano
Aglietti, Esteban Fausto
Sakka, Yoshio
Estili, Mehdi
Suárez, Gustavo
Heterocoagulation and SPS sintering of sulfonitric-treated CNT and 8YZ nanopowders
topic_facet Química
Carbon nanotubes
Composites
Zirconia
Processing
SPS sintering
description Reinforcement of ceramic composites using carbon nanotubes (CNT) has been extensively studied for materials such as Al2O3, Si3N4 and tetragonal ZrO2. Knowledge concerning CNT composites based on a matrix of cubic zirconia (8YZ) is in short supply, however. This paper presents a study on the addition of 1 wt% CNT to an 8YZ matrix. CNT was functionalized by sulfonitric treatment at three different temperatures: 50, 90 and 130°C. To obtain strong bond between the CNT and the 8YZ particles, the composites were produced by electrostatic heterocoagulation followed by consolidation by spark plasma sintering (SPS). Dense 8YZCNT composites were successfully processed by the proposed route. A study of the influence of the surface treatment temperature of CNT on the final properties of ceramics is also presented. CNTs are dispersed uniformly and individually within the 8YZ matrix in 8YZ-CNT 90 and 8YZ-CNT130 composites. 8YZ-CNT50 displayed a less uniform CNT distribution and the largest grain size, suggesting that the lowest temperature acid pretreatment is less effective for the subsequent heterocoagulation mixture. The reinforcement of ceramic materials by the addition of 1 wt% CNT was confirmed by an evaluation of fracture toughness.
format Articulo
Articulo
author Gómez, Sofía
Rendtorff Birrer, Nicolás Maximiliano
Aglietti, Esteban Fausto
Sakka, Yoshio
Estili, Mehdi
Suárez, Gustavo
author_facet Gómez, Sofía
Rendtorff Birrer, Nicolás Maximiliano
Aglietti, Esteban Fausto
Sakka, Yoshio
Estili, Mehdi
Suárez, Gustavo
author_sort Gómez, Sofía
title Heterocoagulation and SPS sintering of sulfonitric-treated CNT and 8YZ nanopowders
title_short Heterocoagulation and SPS sintering of sulfonitric-treated CNT and 8YZ nanopowders
title_full Heterocoagulation and SPS sintering of sulfonitric-treated CNT and 8YZ nanopowders
title_fullStr Heterocoagulation and SPS sintering of sulfonitric-treated CNT and 8YZ nanopowders
title_full_unstemmed Heterocoagulation and SPS sintering of sulfonitric-treated CNT and 8YZ nanopowders
title_sort heterocoagulation and sps sintering of sulfonitric-treated cnt and 8yz nanopowders
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/118804
work_keys_str_mv AT gomezsofia heterocoagulationandspssinteringofsulfonitrictreatedcntand8yznanopowders
AT rendtorffbirrernicolasmaximiliano heterocoagulationandspssinteringofsulfonitrictreatedcntand8yznanopowders
AT agliettiestebanfausto heterocoagulationandspssinteringofsulfonitrictreatedcntand8yznanopowders
AT sakkayoshio heterocoagulationandspssinteringofsulfonitrictreatedcntand8yznanopowders
AT estilimehdi heterocoagulationandspssinteringofsulfonitrictreatedcntand8yznanopowders
AT suarezgustavo heterocoagulationandspssinteringofsulfonitrictreatedcntand8yznanopowders
bdutipo_str Repositorios
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