Cold sintering and electric characterization of ZnO-BaTiO3 composites

Detalhes bibliográficos
Autor(a) principal: Coutinho,L.
Data de Publicação: 2021
Outros Autores: Aredes,R. G., Antonelli,E.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Cerâmica (São Paulo. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132021000100105
Resumo: Abstract The sintering is an essential step in the processing of ceramics materials. A number of researchers have reported new techniques for sintering. However, in general, the process still demands high temperatures. This paper reports the results of the cold sintering of ZnO-BaTiO3 composites. The microstructural, structural, and electric properties of the composite were studied. We obtained high densities (>95%) for pure ZnO and for the composition with 10 wt% of BaTiO3 at a low temperature of sintering (250 °C/1 h). The increase of BaTiO3 content reduced the grain size and degraded the sinterability of ZnO. The crystalline structure was investigated by X-ray diffraction and confirmed the separation of the phases after the cold sintering. The BaTiO3 added in the composite reduced the values of conductivity, permittivity, and also the dielectric loss.
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spelling Cold sintering and electric characterization of ZnO-BaTiO3 compositesceramicscold sinteringimpedance spectroscopydielectricsAbstract The sintering is an essential step in the processing of ceramics materials. A number of researchers have reported new techniques for sintering. However, in general, the process still demands high temperatures. This paper reports the results of the cold sintering of ZnO-BaTiO3 composites. The microstructural, structural, and electric properties of the composite were studied. We obtained high densities (>95%) for pure ZnO and for the composition with 10 wt% of BaTiO3 at a low temperature of sintering (250 °C/1 h). The increase of BaTiO3 content reduced the grain size and degraded the sinterability of ZnO. The crystalline structure was investigated by X-ray diffraction and confirmed the separation of the phases after the cold sintering. The BaTiO3 added in the composite reduced the values of conductivity, permittivity, and also the dielectric loss.Associação Brasileira de Cerâmica2021-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132021000100105Cerâmica v.67 n.381 2021reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/0366-69132021673813061info:eu-repo/semantics/openAccessCoutinho,L.Aredes,R. G.Antonelli,E.eng2021-02-05T00:00:00Zoai:scielo:S0366-69132021000100105Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2021-02-05T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Cold sintering and electric characterization of ZnO-BaTiO3 composites
title Cold sintering and electric characterization of ZnO-BaTiO3 composites
spellingShingle Cold sintering and electric characterization of ZnO-BaTiO3 composites
Coutinho,L.
ceramics
cold sintering
impedance spectroscopy
dielectrics
title_short Cold sintering and electric characterization of ZnO-BaTiO3 composites
title_full Cold sintering and electric characterization of ZnO-BaTiO3 composites
title_fullStr Cold sintering and electric characterization of ZnO-BaTiO3 composites
title_full_unstemmed Cold sintering and electric characterization of ZnO-BaTiO3 composites
title_sort Cold sintering and electric characterization of ZnO-BaTiO3 composites
author Coutinho,L.
author_facet Coutinho,L.
Aredes,R. G.
Antonelli,E.
author_role author
author2 Aredes,R. G.
Antonelli,E.
author2_role author
author
dc.contributor.author.fl_str_mv Coutinho,L.
Aredes,R. G.
Antonelli,E.
dc.subject.por.fl_str_mv ceramics
cold sintering
impedance spectroscopy
dielectrics
topic ceramics
cold sintering
impedance spectroscopy
dielectrics
description Abstract The sintering is an essential step in the processing of ceramics materials. A number of researchers have reported new techniques for sintering. However, in general, the process still demands high temperatures. This paper reports the results of the cold sintering of ZnO-BaTiO3 composites. The microstructural, structural, and electric properties of the composite were studied. We obtained high densities (>95%) for pure ZnO and for the composition with 10 wt% of BaTiO3 at a low temperature of sintering (250 °C/1 h). The increase of BaTiO3 content reduced the grain size and degraded the sinterability of ZnO. The crystalline structure was investigated by X-ray diffraction and confirmed the separation of the phases after the cold sintering. The BaTiO3 added in the composite reduced the values of conductivity, permittivity, and also the dielectric loss.
publishDate 2021
dc.date.none.fl_str_mv 2021-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132021000100105
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132021000100105
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0366-69132021673813061
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Cerâmica
publisher.none.fl_str_mv Associação Brasileira de Cerâmica
dc.source.none.fl_str_mv Cerâmica v.67 n.381 2021
reponame:Cerâmica (São Paulo. Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Cerâmica (São Paulo. Online)
collection Cerâmica (São Paulo. Online)
repository.name.fl_str_mv Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ceram.abc@gmail.com||ceram.abc@gmail.com
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