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Kinetics and Mechanism of the Microwave Synthesis of Barium Titanate

Published online by Cambridge University Press:  10 February 2011

Hanlin Zhang ,
Shixi Ouyang ,
Hanxing Liu  and
Yongwei Li
Hanlin Zhang
Affiliation:
National Key Laboratory for Synthesis and Processing of Advanced Materials, Wuhan University of Technology, Wuhan 430070, P. R. China
Shixi Ouyang
Affiliation:
National Key Laboratory for Synthesis and Processing of Advanced Materials, Wuhan University of Technology, Wuhan 430070, P. R. China
Hanxing Liu
Affiliation:
National Key Laboratory for Synthesis and Processing of Advanced Materials, Wuhan University of Technology, Wuhan 430070, P. R. China
Yongwei Li
Affiliation:
National Key Laboratory for Synthesis and Processing of Advanced Materials, Wuhan University of Technology, Wuhan 430070, P. R. China
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Abstract

The formation kinetics of BaTiO3 from the solid-state BaCO3 and TiO2 powder in a microwave field was investigated. The quantitative XRD analysis and the model considered the volume change between reactant and product were used in this experiment. Results show that the formation rate of BaTiO3 in a microwave field is much faster than upon conventional heating. The activation energy of the solid state reaction for BaTiO3 was measured as 58 kJ/mol. This indicates the enhancement of diffusion by the microwave heating process.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 430: Symposium O – Microwave Processing of Materials V , 1996 , 447
Copyright
Copyright © Materials Research Society 1996

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