Publicação: Mechanochemical synthesis of Bi4Ti3O12
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Our efforts were directed to the preparation of bismuth titanate - Bi 4e;Ti3O12 (BIT) by mechanically assisted synthesis. The mechanical activation was applied to prepare bismuth titanate, Bi4e;Ti3O12, from bismuth oxide, Bi 2O3, and titanium oxide, TiO2 (in an anatase crystal form). Mechanochemical synthesis was performed in a planetary ball mill in air atmosphere. Bismuth titanate ceramics was obtained by sintering at 1000° C The formation of Bi4e;Ti3O12 in the sintered samples was confirmed by X-ray diffraction analysis. Scanning electron microscopy, SEM, was used to study the particle size and powder morphology. The obtained results indicate that Bi4e;Ti3O12 from the powder synthesized by high-energy ball milling exhibits good sinterability, showing advantage of the mechanochemical process over conventional solid-state reaction.
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Ceramics, Mechanochemical synthesis, Milling, Powders, X-ray methods, Powder morphology, Ceramic materials, Scanning electron microscopy, Sintering, Synthesis (chemical), X ray analysis, Bismuth compounds
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Inglês
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Materials Science Forum, v. 518, p. 125-130, 2006.
