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首页> 外文期刊>Journal of thermal analysis and calorimetry >Nanosized bismuth titanate (Bi_4Ti_3O_(12)) system drive through auto-combustion process by using suspension titania (TiO_2)
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Nanosized bismuth titanate (Bi_4Ti_3O_(12)) system drive through auto-combustion process by using suspension titania (TiO_2)

机译：Nanosized bismuth titanate (Bi_4Ti_3O_(12)) system drive through auto-combustion process by using suspension titania (TiO_2)

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摘要

Bismuth titanate (Bi_4Ti_3O_(12)) was developed by means of titanium oxide (TiO_2) suspension in auto-combustion process at 220 ?C to get nanosized (20 ± 5 nm) bismuth titanate (Bi_4Ti_3O_(12)) powder. Complete piezoelectric phase (tetragonal) was obtained after calcination at 700 ?C. Dilatometery of compacts was performed to find out sintering temperature. On the basis of shrinkage results, compacts were sintered at 750, 800, and 850 ?C for 2 h. After sintering single phase was obtained with orthorhombic structure analyzed by X-ray diffraction and also investigated by Rietveld method. High-resolution scanning electron microscopy revealed that fine plate-like structure which is a characteristic of BIT powder can be obtained at 850 ?C. Sintering results indicate that density and average grain size increase with the increasing temperature. A maximum of about 90 of the theoretical density was achieved for the sintered product at 850 ?C.

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