Interface segregation of iron sintering aid in gadolinium-doped ceria
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CrystEngComm
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Sintering additives are commonly used in ceria-based oxide aiming at decreasing temperatures to prevent
undesired reactions in several applications such as in solid oxide fuel cell functional layers. The role played
by the sintering additive is studied in the case of Fe2O3 added to gadolinium-doped ceria (CGO). The
distribution of iron on the CGO nanopowders was measured by a simple chemical method. The enhanced
sintering of CGO is associated with the preferred segregation of iron species at the grain boundaries.
Nevertheless, iron addition was found to change the distribution of gadolinium in the coprecipitated CGO
powders. The saturation of the sintering aid at the grain boundary was induced by increasing the grain size
of CGO. The resulting precipitation of iron-rich grains induced a small increase in the electrical
conductivity of CGO.
Como referenciar
MACHADO, MARINA; SILVA, ANDRE L. da; MORAES, LATECIA P.R.; RODRIGUES, LAYS N.; CALIMAN, LORENA B.; GOUVEA, DOUGLAS; FONSECA, FABIO C. Interface segregation of iron sintering aid in gadolinium-doped ceria. CrystEngComm, v. 25, n. 43, p. 6102–6110, 2023. DOI: 10.1039/d3ce00852e. Disponível em: https://repositorio.ipen.br/handle/123456789/47898. Acesso em: 20 Mar 2026.
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.