Microstructure and mechanical properties of doped-lanthanum gallate with addition of yttria-stabilized zirconia
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Strontium- and magnesium-doped lanthanum gallate ceramics exhibiting relatively high values of ionic conductivity, and chemical
stability over a wide range of oxygen partial pressure are considered potential solid electrolytes for application in electrochemical
devices for clean energy production. Recently, the addition of a second phase has been a strategy to improve the performance of solid
electrolytes. In this work, doped-lanthanum gallate ceramics with up to 20 wt% yttria-stabilized zirconia addition were investigated
to determine the effects of the minor phase on the microstructure evolution, hardness, and elastic modulus of the matrix. Composite
solid electrolytes were prepared by mechanical mixing followed by solid-state sintering in the 1350-1500 ºC range. The mean grain
size of composites was lower than that of the matrix for sintering temperatures up to 1400 ºC, but a fast grain growth was observed
for higher temperatures. Improved mechanical properties were obtained for composites compared to those of the matrix.
Como referenciar
FUJIMOTO, T.G.; SERIACOPI, V.; MACHADO, I.F.; MUCCILLO, E.N.S. Microstructure and mechanical properties of doped-lanthanum gallate with addition of yttria-stabilized zirconia. Cerâmica, v. 69, n. 392, p. 300-304, 2023. DOI: 10.1590/0366-69132024703923495. Disponível em: https://repositorio.ipen.br/handle/123456789/48073. 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.