Electric field-assisted synthesis/sintering cerium oxide
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Journal of the European Ceramic Society
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Gadolinium oxide ceramic powders were mixed to cerium oxide ceramic powders, pressed to pellets, and sintered either at 1450 °C or applying 200 V cm−1 electric field at 800 °C, 900 °C and 1000 °C. 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 and X-ray diffraction. 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.
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PORFIRIO, T.C; MUCCILLO, E.N.S.; MUCCILLO, R. Electric field-assisted synthesis/sintering cerium oxide: 5 wt.% gadolinium oxide. Journal of the European Ceramic Society, v. 41, n. 14, p. 7105-7110, 2021. DOI: 10.1016/j.jeurceramsoc.2021.07.027. Disponível em: http://repositorio.ipen.br/handle/123456789/32488. 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.