Influence of sintering on electrical properties and phase transition of Lasub(2)Mosub(2)Osub(9)
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2005
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INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 5th
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Resumo
High ionic conductivity ceramics have potential technological applications in
chemical sensors, ceramic permeable membranes, oxygen pumps, and solid oxide fuel cells.
Recently ionic conductivity values as high as those of doped zirconia solid solutions have
been found in a lanthanum molybdate compound. The high ionic conductivity of this
compound, La2Mo2O9, is obtained at temperatures above the structural phase transition
temperature (~580 ºC). In this work the La2Mo2O9 ceramic material was prepared by the
polymeric precursor technique and sintered at several dwell temperatures and soaking times to
study the effect of sintering conditions on phase transition. It was found that there is a strong
dependence of phase transition on the sintering profile. At 950 ºC the phase transition is
suppressed for short soaking times, whereas it is observed to occur for longer times.
Moreover, the relative magnitude of conductivity is also dependent on the sintering
conditions. The main conclusion is that the phase transition in La2Mo2O9 is particle sizedependent.
Como referenciar
ROCHA, R.A.; MUCCILLO, E.N.S. Influence of sintering on electrical properties and phase transition of Lasub(2)Mosub(2)Osub(9). In: INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 5th, Oct. 26-29, 2005, Costa do Sauipe, BA. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/18358. 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.