標題: Reaction kinetics and mechanism of BaPbO3 formation
作者: Chang, MC
Wu, JM
Cheng, SY
Chen, SY
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: BaPbO3;kinetics;perovskite;Johnson-Mehl-Avrami model
公開日期: 15-六月-2000
摘要: The influence of starting materials on the formation of BaPbO3 is studied. The reaction kinetics of perovskite BaPbO3 phase formation depends greatly on the phase of lead oxide raw materials. Kinetics of BaPbO3 formation is analyzed by the Johnson-Mehl-Avrami model. The experimental results reveals that the reaction of BaCO3-PbO2 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 BaCO3-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 BaPbO3 and BaCO3. (C) 2000 Elsevier Science S.A. All rights reserved.
URI: http://dx.doi.org/10.1016/S0254-0584(00)00208-X
http://hdl.handle.net/11536/30457
ISSN: 0254-0584
DOI: 10.1016/S0254-0584(00)00208-X
期刊: MATERIALS CHEMISTRY AND PHYSICS
Volume: 65
Issue: 1
起始頁: 57
結束頁: 62
顯示於類別:期刊論文


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