Production of Titanium-based Complex Oxide using Dissolution Reaction of Titanium

Lead zirconate titanate is a typical piezoelectric material, but it is becoming subject to regulations, and lead-free piezoelectric ceramics are attracting attention as an alternative material that does not use lead. In this study, we attempted to fabricate piezoelectric ceramics by corrosion reaction of Ti and Bi. For example, in the preparation of Bi4Ti3O12, NH3 solution and Ti were first added to H2O2. And then, Ti was dissolved in the solution completely. Next, HNO3 solution in which Bi dissolved was added in Ti solution above in small amounts and stirred. Ammonia was further added to mixed solution above to adjust pH. And Bi4Ti3O12 powder was obtained after filtrating, drying and calcinating.