Microstructural evolution of the al2o3-zro2 composite and its correlation with electrical conductivity

Detalhes bibliográficos
Autor(a) principal: Fortulan,Carlos A.
Data de Publicação: 1999
Outros Autores: Souza,Dulcina P.F. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14391999000300016
Resumo: The Al2O3-ZrO2 composite was studied by impedance spectroscopy, a non destructive technique that was found to be sensitive to the composite's microstructure. The observed decrease in the zirconia grain and grain boundary conductivities points to compression on zirconia grain by alumina matrix. This effect increased with decreased concentration of zirconia in the composite. Measurements were taken of composites above the percolation threshold for vacancy conduction along the zirconia grains. The effect of densification and grain growth on the composite's conduction was measured. The changes in the zirconia grain and grain boundary specific conductivities were found to be correlated.
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spelling Microstructural evolution of the al2o3-zro2 composite and its correlation with electrical conductivityalumina-zirconiaelectrical conductivitymicrostructureThe Al2O3-ZrO2 composite was studied by impedance spectroscopy, a non destructive technique that was found to be sensitive to the composite's microstructure. The observed decrease in the zirconia grain and grain boundary conductivities points to compression on zirconia grain by alumina matrix. This effect increased with decreased concentration of zirconia in the composite. Measurements were taken of composites above the percolation threshold for vacancy conduction along the zirconia grains. The effect of densification and grain growth on the composite's conduction was measured. The changes in the zirconia grain and grain boundary specific conductivities were found to be correlated.ABM, ABC, ABPol1999-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14391999000300016Materials Research v.2 n.3 1999reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14391999000300016info:eu-repo/semantics/openAccessFortulan,Carlos A.Souza,Dulcina P.F. deeng2000-01-21T00:00:00Zoai:scielo:S1516-14391999000300016Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2000-01-21T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Microstructural evolution of the al2o3-zro2 composite and its correlation with electrical conductivity
title Microstructural evolution of the al2o3-zro2 composite and its correlation with electrical conductivity
spellingShingle Microstructural evolution of the al2o3-zro2 composite and its correlation with electrical conductivity
Fortulan,Carlos A.
alumina-zirconia
electrical conductivity
microstructure
title_short Microstructural evolution of the al2o3-zro2 composite and its correlation with electrical conductivity
title_full Microstructural evolution of the al2o3-zro2 composite and its correlation with electrical conductivity
title_fullStr Microstructural evolution of the al2o3-zro2 composite and its correlation with electrical conductivity
title_full_unstemmed Microstructural evolution of the al2o3-zro2 composite and its correlation with electrical conductivity
title_sort Microstructural evolution of the al2o3-zro2 composite and its correlation with electrical conductivity
author Fortulan,Carlos A.
author_facet Fortulan,Carlos A.
Souza,Dulcina P.F. de
author_role author
author2 Souza,Dulcina P.F. de
author2_role author
dc.contributor.author.fl_str_mv Fortulan,Carlos A.
Souza,Dulcina P.F. de
dc.subject.por.fl_str_mv alumina-zirconia
electrical conductivity
microstructure
topic alumina-zirconia
electrical conductivity
microstructure
description The Al2O3-ZrO2 composite was studied by impedance spectroscopy, a non destructive technique that was found to be sensitive to the composite's microstructure. The observed decrease in the zirconia grain and grain boundary conductivities points to compression on zirconia grain by alumina matrix. This effect increased with decreased concentration of zirconia in the composite. Measurements were taken of composites above the percolation threshold for vacancy conduction along the zirconia grains. The effect of densification and grain growth on the composite's conduction was measured. The changes in the zirconia grain and grain boundary specific conductivities were found to be correlated.
publishDate 1999
dc.date.none.fl_str_mv 1999-07-01
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=S1516-14391999000300016
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14391999000300016
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14391999000300016
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.2 n.3 1999
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_ 1754212656562044928

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