Analysis of Ca-PZT powder obtained by the Pechini and partial oxalate methods

Detalhes bibliográficos
Autor(a) principal: Nasar,R. S.
Data de Publicação: 2008
Outros Autores: Cerqueira,M., Longo,E., Varela,J. A.
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=S0366-69132008000100006
Resumo: Ca-Pb(Zr,Ti)O3 (Ca-PZT) powders were prepared by a combined method, Pechini technique for the intermediate ZrTiO4 (ZT) particles and oxalate route for the final powder. The intermediate and final products were characterized by X-ray diffraction and BET for phase identification and granulometric analysis, respectively. The surface area of ZT powder reduced remarkably from 70 to 7.4 m²/g when the calcining temperature increased from 600 to 800 °C. Incremental pore volume and average pore diameters of the powder calcined at 700 °C for 3 h were 0.026 cm³/g and 70 Å, respectively. Ca-PZT powder calcined at 800 ºC for 3 h, with agglomeration factor (AF) 2.8, showed no hysteresis in BET analysis, which indicate small agglomeration without micropores among particles. The powder calcined at 750 ºC for 3 h, however, exhibited small AF and high sinterability.
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spelling Analysis of Ca-PZT powder obtained by the Pechini and partial oxalate methodsechini methodCa-PZTpowder sinteringCa-Pb(Zr,Ti)O3 (Ca-PZT) powders were prepared by a combined method, Pechini technique for the intermediate ZrTiO4 (ZT) particles and oxalate route for the final powder. The intermediate and final products were characterized by X-ray diffraction and BET for phase identification and granulometric analysis, respectively. The surface area of ZT powder reduced remarkably from 70 to 7.4 m²/g when the calcining temperature increased from 600 to 800 °C. Incremental pore volume and average pore diameters of the powder calcined at 700 °C for 3 h were 0.026 cm³/g and 70 Å, respectively. Ca-PZT powder calcined at 800 ºC for 3 h, with agglomeration factor (AF) 2.8, showed no hysteresis in BET analysis, which indicate small agglomeration without micropores among particles. The powder calcined at 750 ºC for 3 h, however, exhibited small AF and high sinterability.Associação Brasileira de Cerâmica2008-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132008000100006Cerâmica v.54 n.329 2008reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0366-69132008000100006info:eu-repo/semantics/openAccessNasar,R. S.Cerqueira,M.Longo,E.Varela,J. A.eng2008-05-27T00:00:00Zoai:scielo:S0366-69132008000100006Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2008-05-27T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Analysis of Ca-PZT powder obtained by the Pechini and partial oxalate methods
title Analysis of Ca-PZT powder obtained by the Pechini and partial oxalate methods
spellingShingle Analysis of Ca-PZT powder obtained by the Pechini and partial oxalate methods
Nasar,R. S.
echini method
Ca-PZT
powder sintering
title_short Analysis of Ca-PZT powder obtained by the Pechini and partial oxalate methods
title_full Analysis of Ca-PZT powder obtained by the Pechini and partial oxalate methods
title_fullStr Analysis of Ca-PZT powder obtained by the Pechini and partial oxalate methods
title_full_unstemmed Analysis of Ca-PZT powder obtained by the Pechini and partial oxalate methods
title_sort Analysis of Ca-PZT powder obtained by the Pechini and partial oxalate methods
author Nasar,R. S.
author_facet Nasar,R. S.
Cerqueira,M.
Longo,E.
Varela,J. A.
author_role author
author2 Cerqueira,M.
Longo,E.
Varela,J. A.
author2_role author
author
author
dc.contributor.author.fl_str_mv Nasar,R. S.
Cerqueira,M.
Longo,E.
Varela,J. A.
dc.subject.por.fl_str_mv echini method
Ca-PZT
powder sintering
topic echini method
Ca-PZT
powder sintering
description Ca-Pb(Zr,Ti)O3 (Ca-PZT) powders were prepared by a combined method, Pechini technique for the intermediate ZrTiO4 (ZT) particles and oxalate route for the final powder. The intermediate and final products were characterized by X-ray diffraction and BET for phase identification and granulometric analysis, respectively. The surface area of ZT powder reduced remarkably from 70 to 7.4 m²/g when the calcining temperature increased from 600 to 800 °C. Incremental pore volume and average pore diameters of the powder calcined at 700 °C for 3 h were 0.026 cm³/g and 70 Å, respectively. Ca-PZT powder calcined at 800 ºC for 3 h, with agglomeration factor (AF) 2.8, showed no hysteresis in BET analysis, which indicate small agglomeration without micropores among particles. The powder calcined at 750 ºC for 3 h, however, exhibited small AF and high sinterability.
publishDate 2008
dc.date.none.fl_str_mv 2008-03-01
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=S0366-69132008000100006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132008000100006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0366-69132008000100006
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.54 n.329 2008
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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