Long-term high-temperature stability of directionally grown [Bi2Ba2O4]p[CoO2] rods

[Bi2Ba2O4]p[CoO2] thermoelectric ceramics have been successfully grown from the melt using the laser floating zone method, followed by a thermal treatment at 700°C under air between 0 and 1532 h. The microstructural, thermoelectric, and mechanical properties were evaluated as a function of the therm...

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Detalles Bibliográficos
Autores: Diez, J.C., Madre, M.A., Torres, M.A., Rasekh, S., Sotelo, A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:61700
Acceso en línea:http://zaguan.unizar.es/record/61700
Access Level:acceso abierto
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spelling Long-term high-temperature stability of directionally grown [Bi2Ba2O4]p[CoO2] rodsDiez, J.C.Madre, M.A.Torres, M.A.Rasekh, S.Sotelo, A.[Bi2Ba2O4]p[CoO2] thermoelectric ceramics have been successfully grown from the melt using the laser floating zone method, followed by a thermal treatment at 700°C under air between 0 and 1532 h. The microstructural, thermoelectric, and mechanical properties were evaluated as a function of the thermal treatment length. Microstructure has shown that as-grown samples are composed of thermoelectric grains, together with a relatively high amount of secondary phases. Thermal treatment decreased the number and amount of secondary phases, producing nearly single-phase samples after 384 h. Consequently, the thermoelectric properties evaluated through the power factor showed a slight increase with the thermal treatment length, mainly due to the decrease of electrical resistivity, while the Seebeck coefficient was nearly unchanged. On the other hand, flexural strength was practically constant after 24 h thermal treatment.2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://zaguan.unizar.es/record/61700reponame:Zaguán. Repositorio Digital de la Universidad de Zaragozainstname:Universidad de ZaragozaInglésinfo:eu-repo/grantAgreement/ES/DGA/T12info:eu-repo/grantAgreement/ES/DGA/T87info:eu-repo/grantAgreement/ES/MINECO/MAT2013-46505-C3-1-Rinfo:eu-repo/semantics/openAccessoai:zaguan.unizar.es:617002026-05-29T13:59:51Z
dc.title.none.fl_str_mv Long-term high-temperature stability of directionally grown [Bi2Ba2O4]p[CoO2] rods
title Long-term high-temperature stability of directionally grown [Bi2Ba2O4]p[CoO2] rods
spellingShingle Long-term high-temperature stability of directionally grown [Bi2Ba2O4]p[CoO2] rods
Diez, J.C.
title_short Long-term high-temperature stability of directionally grown [Bi2Ba2O4]p[CoO2] rods
title_full Long-term high-temperature stability of directionally grown [Bi2Ba2O4]p[CoO2] rods
title_fullStr Long-term high-temperature stability of directionally grown [Bi2Ba2O4]p[CoO2] rods
title_full_unstemmed Long-term high-temperature stability of directionally grown [Bi2Ba2O4]p[CoO2] rods
title_sort Long-term high-temperature stability of directionally grown [Bi2Ba2O4]p[CoO2] rods
dc.creator.none.fl_str_mv Diez, J.C.
Madre, M.A.
Torres, M.A.
Rasekh, S.
Sotelo, A.
author Diez, J.C.
author_facet Diez, J.C.
Madre, M.A.
Torres, M.A.
Rasekh, S.
Sotelo, A.
author_role author
author2 Madre, M.A.
Torres, M.A.
Rasekh, S.
Sotelo, A.
author2_role author
author
author
author
description [Bi2Ba2O4]p[CoO2] thermoelectric ceramics have been successfully grown from the melt using the laser floating zone method, followed by a thermal treatment at 700°C under air between 0 and 1532 h. The microstructural, thermoelectric, and mechanical properties were evaluated as a function of the thermal treatment length. Microstructure has shown that as-grown samples are composed of thermoelectric grains, together with a relatively high amount of secondary phases. Thermal treatment decreased the number and amount of secondary phases, producing nearly single-phase samples after 384 h. Consequently, the thermoelectric properties evaluated through the power factor showed a slight increase with the thermal treatment length, mainly due to the decrease of electrical resistivity, while the Seebeck coefficient was nearly unchanged. On the other hand, flexural strength was practically constant after 24 h thermal treatment.
publishDate 2017
dc.date.none.fl_str_mv 2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://zaguan.unizar.es/record/61700
url http://zaguan.unizar.es/record/61700
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/ES/DGA/T12
info:eu-repo/grantAgreement/ES/DGA/T87
info:eu-repo/grantAgreement/ES/MINECO/MAT2013-46505-C3-1-R
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv
publisher.none.fl_str_mv
dc.source.none.fl_str_mv reponame:Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname:Universidad de Zaragoza
instname_str Universidad de Zaragoza
reponame_str Zaguán. Repositorio Digital de la Universidad de Zaragoza
collection Zaguán. Repositorio Digital de la Universidad de Zaragoza
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