Formation Mechanism of Plate-like Bi4Ti3O12 Particles in Molten Salt Fluxes
Formation Mechanism of Plate-like Bi4Ti3O12 Particles in Molten Salt Fluxes
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DOI：
10.1080/10584587.2014.904705
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发表时间：
2014-05
影响因子：
0.7
通讯作者：
Zhihao Zhao;Xiaolei Li;Huiming Ji;Minyang Deng
中科院分区：
文献类型：
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作者：
Zhihao Zhao;Xiaolei Li;Huiming Ji;Minyang Deng
采用熔盐法制备了片状Bi 4 Ti 3 O 12粉体。研究了烧结温度和冷却工艺对Bi 4 Ti 3 O 12粉末显微结构的影响。更大的颗粒在更高的温度下形成。在缓慢冷却过程中，颗粒会长大。在Na_2SO_4-K_2SO_4体系中，片状Bi_4Ti_3O_（12）颗粒的形成机制可分为四个过程：（1）固相反应和形核，（2）片状结构的形成，（3）扩散和边缘形核，（4）扩散和外延生长。
The plate-like Bi4Ti3O12 particles were prepared by molten salt synthesis method. The influence of sintering temperature and cooling process on the microstructure of Bi4Ti3O12 powders was studied. Much larger particles were formed at higher temperatures. The particles could grow larger in slow cooling process. The formation mechanism of plate-like Bi4Ti3O12 particles in Na2SO4-K2SO4 system could be viewed as four processes: (1) solid reaction and nucleation, (2) plate-like structure formation, (3) diffusion and edge nucleation, (4) diffusion and epitaxial growth.