Correlation between Powder Characteristic and Microstructure Development of Y-doped BaCeO3


ISSN 1121-7588
Araujo H.E.,Souza D.P.F.
Programa de Pós Graduação em Ciência e Engenharia de Materiais (PPG-CEM), Federal University of São Carlos, São Carlos-SP, Brazil

Abstract

Ceramics based on Y-doped BaCeO3 were prepared by citrate process. The X- ray fluorescence
shows that barium stoichiometry deviation is established during calcination step. Through the SEM
analysis of fracture surface of sintered samples it was possible to infer that powder highly deficient
of barium shows higher diffusion coefficient during sintering than stoichiometric powder promoting
grain growth and, consequently, trapping pores into the grains.
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