Características estruturais, microestruturais, dielétricas e piroelétricas de cerâmicas de Sr xBa1-X Nb2O6 forjadas a quente

Detalhes bibliográficos
Autor(a) principal: Venet,Michel
Data de Publicação: 2003
Outros Autores: Vendramini,Aline, Santos,Ivair Aparecido, Eiras,José Antonio, Garcia,Ducinei
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.
id ABMABCABPOL-1_e143b9279f0b19e983b8dd6e60f67e7f
oai_identifier_str oai:scielo:S1516-14392003000400014
network_acronym_str ABMABCABPOL-1
network_name_str Materials research (São Carlos. Online)
repository_id_str
spelling 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