Reaction kinetics and mechanism of BaPbO 3 formation

M. C. Chang*, J. M. Wu, S. Y. Cheng, San-Yuan Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


The influence of starting materials on the formation of BaPbO 3 is studied. The reaction kinetics of perovskite BaPbO 3 phase formation depends greatly on the phase of lead oxide raw materials. Kinetics of BaPbO 3 formation is analyzed by the Johnson-Mehl-Avrami model. The experimental results reveals that the reaction of BaCO 3 -PbO 2 raw materials has a reaction order of n = 5/2, and the reaction is controlled by diffusion. On the other hand, in the case of BaCO 3 -PbO system, the reaction order n is equal to 1. The formation is controlled by the interface reaction. In the final stage of both systems, the reaction orders are the same of about 0.5. The phases left in the final stage are BaPbO 3 and BaCO 3 .

Original languageEnglish
Pages (from-to)57-62
Number of pages6
JournalMaterials Chemistry and Physics
Issue number1
StatePublished - 15 Jun 2000

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