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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.117  No.1363 (March) (2009)  >  pp.388-391

Journal of the Ceramic Society of Japan
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Preparation of barium titanate powders by microwave-assisted liquid phase process at ambient pressure

Ryo MATOBA1), Yamato HAYASHI1) and Hirotsugu TAKIZAWA1)
1) Department of Applied Chemistry, Graduate School of Engineering, Tohoku University

  Fine barium titanate (BaTiO3) powders were prepared by a microwave-assisted liquid phase process at ambient pressure. The process is simple, ecologically friendly, and economical. Titanium dioxide (TiO2) and Barium hydroxide octahydrate (BaOH2·8H2O) were the only starting materials used, in order to avoid contamination. BaTiO3 powders were obtained as a single cubic phase from both microwave-assisted and conventional liquid phase processes. BaTiO3 powders synthesized by conventional liquid phase process were nonuniform in size. In contrast, BaTiO3 powders made by the microwave-assisted process consisted of fine uniform particles with a narrow size distribution. TGA analysis revealed that the lattice OH group content in BaTiO3 powders synthesized by the microwave-assisted process decreased with increasing reaction time.

Barium titanate, Microwave synthesis, Liquid phase, Lattice hydroxyl groups, Morphology

Received: November 27, 2008
Accepted: January 15, 2009 , Published online: March 01, 2009
Copyright (c) 2009 The Ceramic Society of Japan



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