Preparation of barium titanate powders by microwave-assisted liquid phase process at ambient pressure(<Feature>Aqueous Solution Science for Ceramic Processing II)

概要

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Fine barium titanate (BaTiO_3) powders were prepared by a microwave-assisted liquid phase process at ambient pressure. The process is simple, ecologically friendly, and economical. Titanium dioxide (TiO_2) and Barium hydroxide octahydrate (BaOH_2・8H_2O) were the only starting materials used, in order to avoid contamination. BaTiO_3 powders were obtained as a single cubic phase from both microwave-assisted and conventional liquid phase processes. BaTiO_3 powders synthesized by conventional liquid phase process were nonuniform in size. In contrast, BaTiO_3 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 BaTiO_3 powders synthesized by the microwave-assisted process decreased with increasing reaction time.
社団法人日本セラミックス協会の論文
2009-03-01