Electric field-assisted synthesis/sintering cerium oxide
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2021
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BRAZIL MRS MEETING, 19th; INTERNATIONAL UNION OF MATERIALS RESEARCH SOCIETIES - INTERNATIONAL CONFERENCE ON ELECTRONIC MATERIALS
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Resumo
Gadolinium oxide ceramic powders were mixed to cerium oxide ceramic powders, pressed to
pellets, and sintered either at 1450ºC for 4 h or applying 200 V cm-1 electric field at 800ºC,
900ºC and 1000ºC. The structural phases and the microstructure of the sintered pellets were
analyzed by X-ray diffraction and scanning electron microscopy, respectively. The formation
of substitutional solid solution was followed by monitoring the increase of the electrical
conductivity by impedance spectroscopy measurements and the X-ray diffraction patterns.
The main results show that Joule heating due to the flow through the pellets of the electric
current, which was produced by the application of the electric field, allows for promoting
partial solid solution as well as partial sintering the ceria-gadolinia pellets. Moreover, grain
growth that occurred in the high temperature sintered pellets was inhibited in the electric
field-assisted synthesized/sintered pellets, being an alternative technique for producing
cerium oxide-gadolinium oxide solid solutions.
Como referenciar
PORFÍRIO, TATIANE C.; MUCCILLO, ELIANA N. dos S.; MUCCILLO, REGINALDO. Electric field-assisted synthesis/sintering cerium oxide: 5 wt.% gadolinium oxide. In: BRAZIL MRS MEETING, 19th; INTERNATIONAL UNION OF MATERIALS RESEARCH SOCIETIES - INTERNATIONAL CONFERENCE ON ELECTRONIC MATERIALS, August 30 - September 3, 2021, Online. Abstract... São Carlos, SP: Aptor Software, 2021. p. 321-321. Disponível em: http://repositorio.ipen.br/handle/123456789/32832. Acesso em: 30 Dec 2025.
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.