熔盐法合成片状Bi_4Ti_3O_(12)粉体的研究  

Synthetic study on tabular Bi_4Ti_3O_(12) powder with molten salt method

作　　者：李丽华[1] 黄金亮[1] 张柯[1] 殷镖[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《电子元件与材料》2007年第3期47-48,51,共3页Electronic Components And Materials

基　　金：教育部留学归国人员基金资助项目(2003-14);河南省国际科技合作计划资助项目(03446620012)

摘　　要：以Bi2O3和TiO2为原料,采用熔盐法合成了纯的铋层状结构的Bi4Ti3O12粉体。利用XRD和SEM等手段对其结构和形态进行了表征。结果表明,熔盐法合成的Bi4Ti3O12粉体呈现规则的片状。当温度从800℃升高到1050℃时,粉体片状尺寸增大,径高比增加;当盐与反应物的质量比为0.8时,所得粉体片状尺寸较小,形状不规则;盐与反应物质量比增加到1时,粉体的尺寸明显增大。The pure stoichiometric Bi4Ti3O12 power was successfully prepared by a molten salt method using Bi2O3 and TiO2 as raw materials. The crystal structure and morphology of the powder were characterized by X-ray diffraction and scanning electron microscope. The results reveal that the powders have a distinct flake structure. And particle size is increased when reacting temperature increases from 800 ℃ to 1 050 ℃. The shape of Bi4Ti3O12 power is irregular and particle size is small when salt , reactant is 0.8 （mass ratio） ; while ratio is 1, particle size increases remarkably.

关 键 词：无机非金属材料 熔盐法 BI4TI3O12 晶粒尺寸 微观形貌 

分 类 号：TH145[一般工业技术—材料科学与工程]