QUANTITATIVE MICROSTRUCTURAL ANALYSIS AND PIEZOELECTRICITY OF HIGHLY DENSE, SUBMICRON-STRUCTURED NaNbO3 CERAMICS FROM MECHANICALLY ACTIVATED PRECURSORS

We study in this work the processing of NaNbO3 ceramics prepared in a single thermal treatment of highly reactive precursors obtained by mechanical activation of different reagents, aiming to determine optimum conditions for piezoelectric ceramics production. Pressure-less sintering at 1200ºC leads...

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Detalles Bibliográficos
Autores: Moure Arroyo, Alberto, Hungría, Teresa, Castro, Alicia, Pardo, Lorena
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/41107
Acceso en línea:http://hdl.handle.net/10261/41107
Access Level:acceso abierto
Palabra clave:Quantitative
Microstructural
Analysis
Análisis
Microestructural
Cuantitativo
Sodium
Niobate
Sodio
Niobato
Ceramic
Cerámica
Piezoelectricity
Piezoelectricidad
Mechanical
Activation
Activación
Mecánica
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spelling QUANTITATIVE MICROSTRUCTURAL ANALYSIS AND PIEZOELECTRICITY OF HIGHLY DENSE, SUBMICRON-STRUCTURED NaNbO3 CERAMICS FROM MECHANICALLY ACTIVATED PRECURSORSMoure Arroyo, AlbertoHungría, TeresaCastro, AliciaPardo, LorenaQuantitativeMicrostructuralAnalysisAnálisisMicroestructuralCuantitativoSodiumNiobateSodioNiobatoCeramicCerámicaPiezoelectricityPiezoelectricidadMechanicalActivationActivaciónMecánicaWe study in this work the processing of NaNbO3 ceramics prepared in a single thermal treatment of highly reactive precursors obtained by mechanical activation of different reagents, aiming to determine optimum conditions for piezoelectric ceramics production. Pressure-less sintering at 1200ºC leads to dense ceramics (<5% porosity) with poor mechanical stability, unsuitable for practical uses. Dense hot pressed ceramics were also obtained at lower temperatures (900-1100ºC), all of them in the submicron range of average grain sizes (< 400 nm). Their microstructure was quantitatively characterised and their elastic and electromechanical properties determined by an automatic iterative method from impedance measurements at resonance. A noticeable ensemble of piezoelectric and elastic properties (d33=38 pC.N-1 and Np=3252 kHz.mm) was measured for hot pressed ceramics, from precursors obtained by a combined route of wet-chemistry and mechanical activation, with a microstructure characterized by 0.4% residual porosity and a bimodal lognormal distribution of grain size.Peer reviewed201120112011info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/41107reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://www.sciencedirect.com/science/article/pii/S0955221909000405info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/411072026-05-22T06:33:51Z
dc.title.none.fl_str_mv QUANTITATIVE MICROSTRUCTURAL ANALYSIS AND PIEZOELECTRICITY OF HIGHLY DENSE, SUBMICRON-STRUCTURED NaNbO3 CERAMICS FROM MECHANICALLY ACTIVATED PRECURSORS
title QUANTITATIVE MICROSTRUCTURAL ANALYSIS AND PIEZOELECTRICITY OF HIGHLY DENSE, SUBMICRON-STRUCTURED NaNbO3 CERAMICS FROM MECHANICALLY ACTIVATED PRECURSORS
spellingShingle QUANTITATIVE MICROSTRUCTURAL ANALYSIS AND PIEZOELECTRICITY OF HIGHLY DENSE, SUBMICRON-STRUCTURED NaNbO3 CERAMICS FROM MECHANICALLY ACTIVATED PRECURSORS
Moure Arroyo, Alberto
Quantitative
Microstructural
Analysis
Análisis
Microestructural
Cuantitativo
Sodium
Niobate
Sodio
Niobato
Ceramic
Cerámica
Piezoelectricity
Piezoelectricidad
Mechanical
Activation
Activación
Mecánica
title_short QUANTITATIVE MICROSTRUCTURAL ANALYSIS AND PIEZOELECTRICITY OF HIGHLY DENSE, SUBMICRON-STRUCTURED NaNbO3 CERAMICS FROM MECHANICALLY ACTIVATED PRECURSORS
title_full QUANTITATIVE MICROSTRUCTURAL ANALYSIS AND PIEZOELECTRICITY OF HIGHLY DENSE, SUBMICRON-STRUCTURED NaNbO3 CERAMICS FROM MECHANICALLY ACTIVATED PRECURSORS
title_fullStr QUANTITATIVE MICROSTRUCTURAL ANALYSIS AND PIEZOELECTRICITY OF HIGHLY DENSE, SUBMICRON-STRUCTURED NaNbO3 CERAMICS FROM MECHANICALLY ACTIVATED PRECURSORS
title_full_unstemmed QUANTITATIVE MICROSTRUCTURAL ANALYSIS AND PIEZOELECTRICITY OF HIGHLY DENSE, SUBMICRON-STRUCTURED NaNbO3 CERAMICS FROM MECHANICALLY ACTIVATED PRECURSORS
title_sort QUANTITATIVE MICROSTRUCTURAL ANALYSIS AND PIEZOELECTRICITY OF HIGHLY DENSE, SUBMICRON-STRUCTURED NaNbO3 CERAMICS FROM MECHANICALLY ACTIVATED PRECURSORS
dc.creator.none.fl_str_mv Moure Arroyo, Alberto
Hungría, Teresa
Castro, Alicia
Pardo, Lorena
author Moure Arroyo, Alberto
author_facet Moure Arroyo, Alberto
Hungría, Teresa
Castro, Alicia
Pardo, Lorena
author_role author
author2 Hungría, Teresa
Castro, Alicia
Pardo, Lorena
author2_role author
author
author
dc.subject.none.fl_str_mv Quantitative
Microstructural
Analysis
Análisis
Microestructural
Cuantitativo
Sodium
Niobate
Sodio
Niobato
Ceramic
Cerámica
Piezoelectricity
Piezoelectricidad
Mechanical
Activation
Activación
Mecánica
topic Quantitative
Microstructural
Analysis
Análisis
Microestructural
Cuantitativo
Sodium
Niobate
Sodio
Niobato
Ceramic
Cerámica
Piezoelectricity
Piezoelectricidad
Mechanical
Activation
Activación
Mecánica
description We study in this work the processing of NaNbO3 ceramics prepared in a single thermal treatment of highly reactive precursors obtained by mechanical activation of different reagents, aiming to determine optimum conditions for piezoelectric ceramics production. Pressure-less sintering at 1200ºC leads to dense ceramics (<5% porosity) with poor mechanical stability, unsuitable for practical uses. Dense hot pressed ceramics were also obtained at lower temperatures (900-1100ºC), all of them in the submicron range of average grain sizes (< 400 nm). Their microstructure was quantitatively characterised and their elastic and electromechanical properties determined by an automatic iterative method from impedance measurements at resonance. A noticeable ensemble of piezoelectric and elastic properties (d33=38 pC.N-1 and Np=3252 kHz.mm) was measured for hot pressed ceramics, from precursors obtained by a combined route of wet-chemistry and mechanical activation, with a microstructure characterized by 0.4% residual porosity and a bimodal lognormal distribution of grain size.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/41107
url http://hdl.handle.net/10261/41107
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://www.sciencedirect.com/science/article/pii/S0955221909000405
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869409531064221696
score 15,198674

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