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dc.contributor.author
Paula, Amauri J.  
dc.contributor.author
Parra, Rodrigo  
dc.contributor.author
Zaghete, Maria A.  
dc.contributor.author
Varela, , José A.  
dc.date.available
2018-01-29T20:02:13Z  
dc.date.issued
2009-10-03  
dc.identifier.citation
Paula, Amauri J.; Parra, Rodrigo; Zaghete, Maria A.; Varela, , José A.; Study on the K3Li2Nb5O15 formation during the production of (Na0.5K0.5)1-xLixNbO3 lead-free piezoceramics at the morphotropic phase boundary; Elsevier; Solid State Communications; 149; 39-40; 3-10-2009; 1587-1590  
dc.identifier.issn
0038-1098  
dc.identifier.uri
http://hdl.handle.net/11336/34956  
dc.description.abstract
Because of the environmental concerns, the manufacture of ceramics based on lead titanate zirconate [Pb(Zr1−xTix)O3−PZT] has been condemned because of the lead toxicity. In this context, the electromechanical properties of sodium, potassium and lithium niobate [(Na0.5−x/2K0.5−x/2Lix)NbO3−NKLN] at the morphotropic phase boundary granted these materials the position of most suitable candidate to replace PZT. However, the production of these ceramics is rather critical mainly because of a natural tendency of forming secondary phases. To help with the studies of the synthesis of this lead-free piezoceramic, this work presents an evaluation of the crystallization of the (Na0.47K0.47Li0.06)NbO3 phase by solid-state reactions. TG-DTA, XRD, dilatometric and ferroelectric hysteresis analyses indicated that a secondary phase (K3Li2Nb5O15) crystallizes at temperatures above 850 C and also during the sintering of the powders compacts at 1080 C. To prevent the formation of this phase, the addition of Na2Nb2O6.nH2O microfibers obtained through a microwave hydrothermal synthesis was performed in the sintering process. After to this addition, the suppression of the K3Li2Nb5O15 phase occurred and an increase of the NKLN electrical properties was then obtained.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Ferroelectrics  
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Piezoelectricity  
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Electrostriction  
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Dielectric Response  
dc.subject.classification
Físico-Química, Ciencia de los Polímeros, Electroquímica  
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Ciencias Químicas  
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CIENCIAS NATURALES Y EXACTAS  
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Ingeniería de los Materiales  
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Ingeniería de los Materiales  
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INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Study on the K3Li2Nb5O15 formation during the production of (Na0.5K0.5)1-xLixNbO3 lead-free piezoceramics at the morphotropic phase boundary  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-01-25T19:53:16Z  
dc.journal.volume
149  
dc.journal.number
39-40  
dc.journal.pagination
1587-1590  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Paula, Amauri J.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil  
dc.description.fil
Fil: Parra, Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina  
dc.description.fil
Fil: Zaghete, Maria A.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil  
dc.description.fil
Fil: Varela, , José A.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil  
dc.journal.title
Solid State Communications  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0038109809004086  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ssc.2009.06.041