Reactive sintering of yttrium-doped barium zirconate (BaZr0.8Y0.2O3-δ) without sintering aids

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorGoulart, Celso Antonio-
Autor(es): dc.creatorVillas-Boas, Lúcia Adriana [UNESP]-
Autor(es): dc.creatorMorelli, Márcio Raymundo-
Autor(es): dc.creatorSouza, Dulcina Pinatti Ferreira de-
Data de aceite: dc.date.accessioned2022-02-22T00:43:47Z-
Data de disponibilização: dc.date.available2022-02-22T00:43:47Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-01-14-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.ceramint.2020.09.102-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/205225-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/205225-
Descrição: dc.descriptionThe effects of Yttrium-doped Barium Zirconate (BZY) synthesis steps by solid-state reaction and the number of starting reactants (2 or 3) on the characteristics of the synthesized ceramic powders were investigated. The slow diffusion rate associated with this synthesis route and the calcination steps used in this work lead to an incomplete synthesis reaction. This condition proved to be useful to improve densification during sintering for undoped samples by emulating the reactive sintering technique with transient reactions originating from the residual BaCO3 reactant. The effects of a low concentration (1 mol%) of ZnO as sintering aid on microstructure and electrical conductivity were also investigated and used for comparison to undoped samples. Electrical properties were analyzed and correlated with microstructural and compositional characteristics. Dense undoped BZY samples (99% of relative density) with high proton conductivity (2.4×10−2S/cm at 600 °C) were obtained by sintering at 1500 °C, while ZnO-doped samples achieved high relative density (97%) at only 1300 °C, but with lower electrical conductivity (7.8×10−3 S/cm at 600 °C).-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionGraduate Program in Materials Science and Engineering Department of Materials Engineering Federal University of São Carlos (UFSCar)-
Descrição: dc.descriptionSão Paulo State University (UNESP) School of Sciences and Engineering-
Descrição: dc.descriptionSão Paulo State University (UNESP) School of Sciences and Engineering-
Descrição: dc.descriptionCAPES: 001-
Descrição: dc.descriptionCAPES: 88882.332711/2019–01-
Formato: dc.format2565-2571-
Idioma: dc.languageen-
Relação: dc.relationCeramics International-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCeramic processing-
Palavras-chave: dc.subjectPCFC-
Palavras-chave: dc.subjectProtonic conductivity-
Palavras-chave: dc.subjectSolid-state reaction-
Palavras-chave: dc.subjectYttrium-doped barium zirconate-
Título: dc.titleReactive sintering of yttrium-doped barium zirconate (BaZr0.8Y0.2O3-δ) without sintering aids-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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