| 摘要 |
PURPOSE:To produce fine particle of barium strontium titanate which is a kind of dielectric material, by reacting a hydrolyzed product of a Ti compound with a water-soluble Ba salt and a water-soluble Sr salt strongly alkaline aqueous solution. CONSTITUTION:The hydrolyzed product of a Ti compound is made to react with a water-soluble Ba salt and a water-soluble Sr salt in a strongly alkaline aqueous solution at a temperature near the boiling point of the solution. The produced precipitate is separated by filtration, washed with water, and dried to obtain the fine particle of composite titanate of formula (o<x<1) (barium strontium titanate). The hydrolyzed Ti compound can be produced by hydrolyzing an aqueous solution of TiCl4, Ti(SO4)2, etc. with an aqueous solution of an alkali such as NH4OH, NaOH, etc.
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