Performance of GDC with alkali metal carbonates as sintering aids

Detalhes bibliográficos
Autor(a) principal: Nascimento, Rubens Maribondo do
Data de Publicação: 2020
Outros Autores: Grilo, João Paulo de Freitas, Macedo, Daniel Araújo de, Marques, Fernando M. B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/45451
Resumo: 2030-12
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spelling Nascimento, Rubens Maribondo doGrilo, João Paulo de FreitasMacedo, Daniel Araújo deMarques, Fernando M. B.2021-12-17T13:56:52Z2020-03GRILO, João P. F.; MACEDO, Daniel A.; NASCIMENTO, Rubens M.; MARQUES, Fernando M. B. Performance of GDC with alkali metal carbonates as sintering aids. Solid State Ionics, [S.L.], v. 346, p. 115221-115221, mar. 2020. http://dx.doi.org/10.1016/j.ssi.2020.115221. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0167273819307295?via%3Dihub. Acesso em: 30 mar. 2021.0167-2738https://repositorio.ufrn.br/handle/123456789/4545110.1016/j.ssi.2020.115221ElsevierCeriaSintering aidsAlkali metal carbonatesIonic conductivityN-type conductivityPerformance of GDC with alkali metal carbonates as sintering aidsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2030-12Gd-doped ceria electrolytes (GDC, 10 at.% Gd) were prepared using a eutectic mixture of Li and Na carbonates as sintering aid (NLC - 0, 1, 3 and 5 mol%), using two processing routes (ceramic and chemical). Structural and microstructural characterization provided no evidence for significant solubility of alkali metal cations in GDC. Materials sintered at 1100 °C/4 h were similar in densification (> 95%) and microstructure to those obtained from a commercial powder sintered at 1500 °C/4 h. Impedance spectroscopy in air (200–600 °C) and as a function of oxygen partial pressure (from 0.21 to about 10−25 atm, 600–750 °C) showed that the low temperature conductivity of materials prepared using chemical synthesis surpassed the conductivity of a commercial GDC due to higher grain boundary conductivity. The estimated n-type conductivity of materials with NLC was also slightly higher than for pure GDC. The role of sintering aid and processing routes is discussed taking into consideration decomposition and volatilization of alkali saltsengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessLICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/45451/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8811https://repositorio.ufrn.br/bitstream/123456789/45451/2/license_rdfe39d27027a6cc9cb039ad269a5db8e34MD52123456789/454512024-03-19 01:04:25.817oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2024-03-19T04:04:25Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Performance of GDC with alkali metal carbonates as sintering aids
title Performance of GDC with alkali metal carbonates as sintering aids
spellingShingle Performance of GDC with alkali metal carbonates as sintering aids
Nascimento, Rubens Maribondo do
Ceria
Sintering aids
Alkali metal carbonates
Ionic conductivity
N-type conductivity
title_short Performance of GDC with alkali metal carbonates as sintering aids
title_full Performance of GDC with alkali metal carbonates as sintering aids
title_fullStr Performance of GDC with alkali metal carbonates as sintering aids
title_full_unstemmed Performance of GDC with alkali metal carbonates as sintering aids
title_sort Performance of GDC with alkali metal carbonates as sintering aids
author Nascimento, Rubens Maribondo do
author_facet Nascimento, Rubens Maribondo do
Grilo, João Paulo de Freitas
Macedo, Daniel Araújo de
Marques, Fernando M. B.
author_role author
author2 Grilo, João Paulo de Freitas
Macedo, Daniel Araújo de
Marques, Fernando M. B.
author2_role author
author
author
dc.contributor.author.fl_str_mv Nascimento, Rubens Maribondo do
Grilo, João Paulo de Freitas
Macedo, Daniel Araújo de
Marques, Fernando M. B.
dc.subject.por.fl_str_mv Ceria
Sintering aids
Alkali metal carbonates
Ionic conductivity
N-type conductivity
topic Ceria
Sintering aids
Alkali metal carbonates
Ionic conductivity
N-type conductivity
description 2030-12
publishDate 2020
dc.date.issued.fl_str_mv 2020-03
dc.date.accessioned.fl_str_mv 2021-12-17T13:56:52Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.citation.fl_str_mv GRILO, João P. F.; MACEDO, Daniel A.; NASCIMENTO, Rubens M.; MARQUES, Fernando M. B. Performance of GDC with alkali metal carbonates as sintering aids. Solid State Ionics, [S.L.], v. 346, p. 115221-115221, mar. 2020. http://dx.doi.org/10.1016/j.ssi.2020.115221. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0167273819307295?via%3Dihub. Acesso em: 30 mar. 2021.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/45451
dc.identifier.issn.none.fl_str_mv 0167-2738
dc.identifier.doi.none.fl_str_mv 10.1016/j.ssi.2020.115221
identifier_str_mv GRILO, João P. F.; MACEDO, Daniel A.; NASCIMENTO, Rubens M.; MARQUES, Fernando M. B. Performance of GDC with alkali metal carbonates as sintering aids. Solid State Ionics, [S.L.], v. 346, p. 115221-115221, mar. 2020. http://dx.doi.org/10.1016/j.ssi.2020.115221. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0167273819307295?via%3Dihub. Acesso em: 30 mar. 2021.
0167-2738
10.1016/j.ssi.2020.115221
url https://repositorio.ufrn.br/handle/123456789/45451
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.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:Repositório Institucional da UFRN
instname:Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
instname_str Universidade Federal do Rio Grande do Norte (UFRN)
instacron_str UFRN
institution UFRN
reponame_str Repositório Institucional da UFRN
collection Repositório Institucional da UFRN
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