Características estruturais, microestruturais, dielétricas e piroelétricas de cerâmicas de Sr xBa1-X Nb2O6 forjadas a quente
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Materials research (São Carlos. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000400014 |
Resumo: | The texturing process and the characterization of textured Sr xBa1-xNb2O6 (x = 0.5; x = 0.6) ferroelectric ceramics were investigated. The ceramic bodies were fabricated through two stage sintering. The first and second stage consisted in conventional firing and hot forging of the ceramic bodies, respectively, both at oxygen atmosphere. The forged ceramics achieved high densification level although showing abnormal grain growth. X-ray diffraction, dielectric and pyroelectric analysis showed that is possible to obtain preferential orientation of the [00l] crystallographic planes due to grain arrangement during hot forging. Consequently, the investigated properties for this textured material were strongly dependent on the measurement direction. On the other hand, high room temperature pyroelectric coefficients, of the same order of that obtained for single crystals of same composition, were observed. |
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Características estruturais, microestruturais, dielétricas e piroelétricas de cerâmicas de Sr xBa1-X Nb2O6 forjadas a quenteferroelectric ceramicstexturinghot pressedforgingThe texturing process and the characterization of textured Sr xBa1-xNb2O6 (x = 0.5; x = 0.6) ferroelectric ceramics were investigated. The ceramic bodies were fabricated through two stage sintering. The first and second stage consisted in conventional firing and hot forging of the ceramic bodies, respectively, both at oxygen atmosphere. The forged ceramics achieved high densification level although showing abnormal grain growth. X-ray diffraction, dielectric and pyroelectric analysis showed that is possible to obtain preferential orientation of the [00l] crystallographic planes due to grain arrangement during hot forging. Consequently, the investigated properties for this textured material were strongly dependent on the measurement direction. On the other hand, high room temperature pyroelectric coefficients, of the same order of that obtained for single crystals of same composition, were observed.ABM, ABC, ABPol2003-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000400014Materials Research v.6 n.4 2003reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392003000400014info:eu-repo/semantics/openAccessVenet,MichelVendramini,AlineSantos,Ivair AparecidoEiras,José AntonioGarcia,Ducineipor2004-01-19T00:00:00Zoai:scielo:S1516-14392003000400014Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2004-01-19T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Características estruturais, microestruturais, dielétricas e piroelétricas de cerâmicas de Sr xBa1-X Nb2O6 forjadas a quente |
title |
Características estruturais, microestruturais, dielétricas e piroelétricas de cerâmicas de Sr xBa1-X Nb2O6 forjadas a quente |
spellingShingle |
Características estruturais, microestruturais, dielétricas e piroelétricas de cerâmicas de Sr xBa1-X Nb2O6 forjadas a quente Venet,Michel ferroelectric ceramics texturing hot pressed forging |
title_short |
Características estruturais, microestruturais, dielétricas e piroelétricas de cerâmicas de Sr xBa1-X Nb2O6 forjadas a quente |
title_full |
Características estruturais, microestruturais, dielétricas e piroelétricas de cerâmicas de Sr xBa1-X Nb2O6 forjadas a quente |
title_fullStr |
Características estruturais, microestruturais, dielétricas e piroelétricas de cerâmicas de Sr xBa1-X Nb2O6 forjadas a quente |
title_full_unstemmed |
Características estruturais, microestruturais, dielétricas e piroelétricas de cerâmicas de Sr xBa1-X Nb2O6 forjadas a quente |
title_sort |
Características estruturais, microestruturais, dielétricas e piroelétricas de cerâmicas de Sr xBa1-X Nb2O6 forjadas a quente |
author |
Venet,Michel |
author_facet |
Venet,Michel Vendramini,Aline Santos,Ivair Aparecido Eiras,José Antonio Garcia,Ducinei |
author_role |
author |
author2 |
Vendramini,Aline Santos,Ivair Aparecido Eiras,José Antonio Garcia,Ducinei |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Venet,Michel Vendramini,Aline Santos,Ivair Aparecido Eiras,José Antonio Garcia,Ducinei |
dc.subject.por.fl_str_mv |
ferroelectric ceramics texturing hot pressed forging |
topic |
ferroelectric ceramics texturing hot pressed forging |
description |
The texturing process and the characterization of textured Sr xBa1-xNb2O6 (x = 0.5; x = 0.6) ferroelectric ceramics were investigated. The ceramic bodies were fabricated through two stage sintering. The first and second stage consisted in conventional firing and hot forging of the ceramic bodies, respectively, both at oxygen atmosphere. The forged ceramics achieved high densification level although showing abnormal grain growth. X-ray diffraction, dielectric and pyroelectric analysis showed that is possible to obtain preferential orientation of the [00l] crystallographic planes due to grain arrangement during hot forging. Consequently, the investigated properties for this textured material were strongly dependent on the measurement direction. On the other hand, high room temperature pyroelectric coefficients, of the same order of that obtained for single crystals of same composition, were observed. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-12-01 |
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=S1516-14392003000400014 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000400014 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
10.1590/S1516-14392003000400014 |
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 |
ABM, ABC, ABPol |
publisher.none.fl_str_mv |
ABM, ABC, ABPol |
dc.source.none.fl_str_mv |
Materials Research v.6 n.4 2003 reponame:Materials research (São Carlos. Online) instname:Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
instname_str |
Universidade Federal de São Carlos (UFSCAR) |
instacron_str |
ABM ABC ABPOL |
institution |
ABM ABC ABPOL |
reponame_str |
Materials research (São Carlos. Online) |
collection |
Materials research (São Carlos. Online) |
repository.name.fl_str_mv |
Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR) |
repository.mail.fl_str_mv |
dedz@power.ufscar.br |
_version_ |
1754212657386225664 |