Transformation Kinetics of Ba2Ti9O20 with ZrO2 Additive
作者： Ting-Yi Wu , Wen-Cheng J. Wei
DOI: 10.1111/J.1551-2916.2006.01296.X
关键词:
摘要: Pure Ba2Ti9O20 (BT29) was synthesized by a solid-state reaction in one step with various amounts of ZrO2 powder additive. The transformation kinetics BT29 were investigated quantitative X-ray diffractometry (XRD). results show that stoichiometric mixtures transform to the phase nucleation and growth mechanism between 1200° 1300°C 1.0 mol% ZrO2. activation energy found be 620±60 kJ/mol, but decreases 515±30 kJ/mol when doped addition possibly changes from diffusion controlled interface controlled.
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