Métodos químicos para obtener varistores basados en SnO2

Detalhes bibliográficos
Autor(a) principal: Mosquera, A.
Data de Publicação: 2006
Outros Autores: Varela, José Arana [UNESP], Rodríguez-Páez, J. E.
Tipo de documento: Artigo
Idioma: spa
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3989/cyv.2006.v45.i6.264
http://hdl.handle.net/11449/69214
Resumo: Synthesis of SnO2 ceramic powders was made by coprecipitation method and polymeric precursor method (Pechini) to obtain Sn-Co-Nb-Ti-Al varistor systems. The particles of the obtained ceramic powder presented nanometric size and SnO2 was the principal crystalline phase in them according to X-ray diffraction results. To determine the behavior of the synthesized samples in front of the thermal treatments, thermal analysis (DTA/TG) were made. Dilatometric studies on previously pressed samples were carried out. The optimal conditions of sintering of this raw material were determined. Microstructures and electric properties of sintered samples were studied using scanning electron microscopy (SEM) and I-V characteristics curves. The samples presented varistor behavior independent of the synthesis method used, with high nonlinearity values as 32. The presence of Al3+ favored the concentration of oxygen vacancies, and the grain growth.
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spelling Métodos químicos para obtener varistores basados en SnO2Chemical methods to obtain SnO2 based varistorsCoprecipitationPechiniSnO2SynthesisVaristorSynthesis of SnO2 ceramic powders was made by coprecipitation method and polymeric precursor method (Pechini) to obtain Sn-Co-Nb-Ti-Al varistor systems. The particles of the obtained ceramic powder presented nanometric size and SnO2 was the principal crystalline phase in them according to X-ray diffraction results. To determine the behavior of the synthesized samples in front of the thermal treatments, thermal analysis (DTA/TG) were made. Dilatometric studies on previously pressed samples were carried out. The optimal conditions of sintering of this raw material were determined. Microstructures and electric properties of sintered samples were studied using scanning electron microscopy (SEM) and I-V characteristics curves. The samples presented varistor behavior independent of the synthesis method used, with high nonlinearity values as 32. The presence of Al3+ favored the concentration of oxygen vacancies, and the grain growth.Grupo CYTEMAC Departamento de Física Universidad del Cauca, Calle 5 4-70, Popayán - CaucaLIEC Universidad Estadual Paulista Instituto de Química, AraraquaraLIEC Universidad Estadual Paulista Instituto de Química, AraraquaraUniversidad del CaucaUniversidade Estadual Paulista (Unesp)Mosquera, A.Varela, José Arana [UNESP]Rodríguez-Páez, J. E.2014-05-27T11:22:02Z2014-05-27T11:22:02Z2006-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article372-378application/pdfhttp://dx.doi.org/10.3989/cyv.2006.v45.i6.264Boletin de la Sociedad Espanola de Ceramica y Vidrio, v. 45, n. 6, p. 372-378, 2006.0366-3175http://hdl.handle.net/11449/6921410.3989/cyv.2006.v45.i6.264WOS:0002415733000022-s2.0-337507224682-s2.0-33750722468.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPspaBoletin de la Sociedad Espanola de Ceramica y Vidrio1.0490,264info:eu-repo/semantics/openAccess2023-12-04T06:16:45Zoai:repositorio.unesp.br:11449/69214Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:29:39.618056Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Métodos químicos para obtener varistores basados en SnO2
Chemical methods to obtain SnO2 based varistors
title Métodos químicos para obtener varistores basados en SnO2
spellingShingle Métodos químicos para obtener varistores basados en SnO2
Mosquera, A.
Coprecipitation
Pechini
SnO2
Synthesis
Varistor
title_short Métodos químicos para obtener varistores basados en SnO2
title_full Métodos químicos para obtener varistores basados en SnO2
title_fullStr Métodos químicos para obtener varistores basados en SnO2
title_full_unstemmed Métodos químicos para obtener varistores basados en SnO2
title_sort Métodos químicos para obtener varistores basados en SnO2
author Mosquera, A.
author_facet Mosquera, A.
Varela, José Arana [UNESP]
Rodríguez-Páez, J. E.
author_role author
author2 Varela, José Arana [UNESP]
Rodríguez-Páez, J. E.
author2_role author
author
dc.contributor.none.fl_str_mv Universidad del Cauca
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Mosquera, A.
Varela, José Arana [UNESP]
Rodríguez-Páez, J. E.
dc.subject.por.fl_str_mv Coprecipitation
Pechini
SnO2
Synthesis
Varistor
topic Coprecipitation
Pechini
SnO2
Synthesis
Varistor
description Synthesis of SnO2 ceramic powders was made by coprecipitation method and polymeric precursor method (Pechini) to obtain Sn-Co-Nb-Ti-Al varistor systems. The particles of the obtained ceramic powder presented nanometric size and SnO2 was the principal crystalline phase in them according to X-ray diffraction results. To determine the behavior of the synthesized samples in front of the thermal treatments, thermal analysis (DTA/TG) were made. Dilatometric studies on previously pressed samples were carried out. The optimal conditions of sintering of this raw material were determined. Microstructures and electric properties of sintered samples were studied using scanning electron microscopy (SEM) and I-V characteristics curves. The samples presented varistor behavior independent of the synthesis method used, with high nonlinearity values as 32. The presence of Al3+ favored the concentration of oxygen vacancies, and the grain growth.
publishDate 2006
dc.date.none.fl_str_mv 2006-11-01
2014-05-27T11:22:02Z
2014-05-27T11:22:02Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.3989/cyv.2006.v45.i6.264
Boletin de la Sociedad Espanola de Ceramica y Vidrio, v. 45, n. 6, p. 372-378, 2006.
0366-3175
http://hdl.handle.net/11449/69214
10.3989/cyv.2006.v45.i6.264
WOS:000241573300002
2-s2.0-33750722468
2-s2.0-33750722468.pdf
url http://dx.doi.org/10.3989/cyv.2006.v45.i6.264
http://hdl.handle.net/11449/69214
identifier_str_mv Boletin de la Sociedad Espanola de Ceramica y Vidrio, v. 45, n. 6, p. 372-378, 2006.
0366-3175
10.3989/cyv.2006.v45.i6.264
WOS:000241573300002
2-s2.0-33750722468
2-s2.0-33750722468.pdf
dc.language.iso.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv Boletin de la Sociedad Espanola de Ceramica y Vidrio
1.049
0,264
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 372-378
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808129077571223552

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