Sintering under AC electric field of samarium doped ceria
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2018
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BRAZILIAN MRS MEETING, 17th
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Resumo
Samarium doped ceria (SDC) is a high oxygen-ion conductor compound with
application in solid oxide fuel cells operating at intermediate temperatures
(500-700ºC). Polycrystalline SDC exhibits low sinterability, requiring high
temperatures to achieve full densification under conventional sintering. Flash
sintering is a recently developed method in which ceramic compacts may be
sintered at lower temperatures and shorter times than those under conventional
sintering. It consists in applying an electric field to a green compact, either
during heating or at a fixed temperature up to the occurrence of an electric
current pulse. In this study, samarium doped ceria (Ce0.8Sm0.2O1.9) was sintered by
applying AC electric field at a fixed frequency of 1.0 kHz to the specimen during
heating (dynamic sintering) or during a fixed temperature (isothermal). The
influence of sintering on densification, microstructure and ionic conductivity was
investigated. Similar density values were obtained for specimens sintered at
800ºC (dynamic) and 1100ºC (isothermal).
Como referenciar
REIS, SHIRLEY L. dos; CARVALHO, SABRINA G. de M.; MUCCILLO, ELIANA N. dos S.; MUCCILLO, REGINALDO. Sintering under AC electric field of samarium doped ceria. In: BRAZILIAN MRS MEETING, 17th, September 16-20, 2018, Natal, RN. Abstract... São Carlos: Aptor Software, 2018. p. 1064-1064. Disponível em: http://repositorio.ipen.br/handle/123456789/30338. Acesso em: 25 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.