A case study of ceramic processing: Microstructural development and electrical properties of Ce0.8Gd0.2O1.9

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.creatorVillas-Boas, Lúcia Adriana [UNESP]-
Autor(es): dc.creatorGoulart, Celso Antonio-
Autor(es): dc.creatorKiminami, Ruth H.G.A.-
Autor(es): dc.creatorde Souza, Dulcina Pinatti Ferreira-
Data de aceite: dc.date.accessioned2022-02-22T00:24:39Z-
Data de disponibilização: dc.date.available2022-02-22T00:24:39Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-06-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.ceramint.2020.01.281-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/198479-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/198479-
Descrição: dc.descriptionThe effects of powder characteristics and conformation methods on green microstructure have been investigated, and microstructural evolution was analyzed based on the green density and the different sintering techniques. Colloidal processing of nanopowders with narrow particle size distribution (15 ± 5 nm) can be more problematic than dry processing and can lead to more heterogeneous microstructures. Two-step sintering can be used to obtain dense nanostructured samples with more flexibility than microwave sintering and still at lower temperatures than conventional sintering. The sinterability of Ce0.8Gd0.2O1.9 is significantly improved by Zn addition, which can reduce sintering temperature to values as low as 800, 1150 and 1200 °C for two-step, microwave and conventional sintering, respectively, in order to achieve relative densities above 90%. Microscopic grain boundary conductivity is shown to be improved in nanostructured samples, despite the higher grain boundary density.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionSão Paulo State University (UNESP) School of Sciences and Engineering-
Descrição: dc.descriptionGraduate Program in Materials Science and Engineering Department of Materials Engineering Federal University of São Carlos-
Descrição: dc.descriptionSão Paulo State University (UNESP) School of Sciences and Engineering-
Formato: dc.format12318-12328-
Idioma: dc.languageen-
Relação: dc.relationCeramics International-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCeramic processing-
Palavras-chave: dc.subjectGadolinium-doped ceria-
Palavras-chave: dc.subjectMicrowave sintering-
Palavras-chave: dc.subjectNanostructured ceramics-
Palavras-chave: dc.subjectTwo-step sintering-
Título: dc.titleA case study of ceramic processing: Microstructural development and electrical properties of Ce0.8Gd0.2O1.9-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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