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dc.contributor.authorMoure Arroyo, Alberto-
dc.contributor.authorHungría, Teresa-
dc.contributor.authorCastro, Alicia-
dc.contributor.authorPardo, Lorena-
dc.date.accessioned2011-10-14T09:00:39Z-
dc.date.available2011-10-14T09:00:39Z-
dc.date.issued2011-10-14-
dc.identifier.issn0955-2219-
dc.identifier.urihttp://hdl.handle.net/10261/41107-
dc.description.abstractWe 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.es_ES
dc.language.isoenges_ES
dc.rightsopenAccesses_ES
dc.subjectQuantitativees_ES
dc.subjectMicrostructurales_ES
dc.subjectAnalysises_ES
dc.subjectAnálisises_ES
dc.subjectMicroestructurales_ES
dc.subjectCuantitativoes_ES
dc.subjectSodiumes_ES
dc.subjectNiobatees_ES
dc.subjectSodioes_ES
dc.subjectNiobatoes_ES
dc.subjectCeramices_ES
dc.subjectCerámicaes_ES
dc.subjectPiezoelectricityes_ES
dc.subjectPiezoelectricidades_ES
dc.subjectMechanicales_ES
dc.subjectActivationes_ES
dc.subjectActivaciónes_ES
dc.subjectMecánicaes_ES
dc.titleQUANTITATIVE MICROSTRUCTURAL ANALYSIS AND PIEZOELECTRICITY OF HIGHLY DENSE, SUBMICRON-STRUCTURED NaNbO3 CERAMICS FROM MECHANICALLY ACTIVATED PRECURSORSes_ES
dc.typeartículoes_ES
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0955221909000405es_ES
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.openairetypeartículo-
item.fulltextWith Fulltext-
item.grantfulltextopen-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
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