中文摘要：

以含铋层状Bi4Ti3O12（BIT）晶粒作为反应前驱体，通过熔盐环境下的局部化学反应法制备了片状钛酸铋钾（K0.5Bi0.5TiO3，KBT）陶瓷粉体晶粒．分析结果表明，所制备的KBT陶瓷晶粒平均直径约为15～20μm厚度小于2μm．分析了由含铋层状型BIT向钙钛矿型KBT片晶转化的形成机制，并讨论了反应路径对最终产物形貌的影响规律．

英文摘要：

Plate-like K0.5Bi0.5TiO3 particles were successfully fabricated by topochemical method from bismuth layer-structured ferroelectric （BLSF） Bi4Ti3O12. Owing to its highly anisotropic structure, plate-like Bi4Ti3 O12 was firstly synthesized in the KCl flux. The plate-like Bi4Ti3O12 was reacted with the complementary K2CO3 and TiO2, finally transformed to perovskite K0.5 Bi0. 5TiO3 particles and maintained its morphology nearly unchanged. Our result suggested the size of the plate-like particles is 15-20μm in length and 2 μm in thickness. The mechanism of the reaction was analyzed according to the results. The KBT particles prepared in this experiment can be used as the template to prepare textured （Na, K）0. 5 Bi0.5Ti03 ceramics by （Reactive） Tem plate Grain Growth method, inducing the grain orientation and thus enhance the properties.