化学溶液分解法制备硅酸铋粉体及其表征  

PREPARATION AND CHARACTERIZATION OF Bi_4Si_3O_(12) POWDERS BY CHEMICAL SOLUTION DECOMPOSITION TECHNIQUE

作　　者：朱常任[1] 王秀峰[1] 江红涛[1] 郭宏伟[1] 

机构地区：[1]陕西科技大学材料科学与工程学院,西安710021

出　　处：《中国陶瓷》2010年第6期20-22,共3页China Ceramics

基　　金：国家自然科学基金资助;编号:50972087

摘　　要：以正硅酸乙酯和五水硝酸铋为原料,采用化学溶液分解法制备Bi4Si3O12粉体。用X射线衍射仪和扫描电子显微镜分析了粉体的相结构和形貌,研究了正硅酸乙酯的用量对粉体相组成的影响。结果表明,前驱物粉体在650℃下煅烧1小时,得到了单一的Bi4Si3O12的粉体;颗粒大小为3～5μm,由若干个大小为300～500nm的晶粒组成为多孔的网状结构;当铋硅比(摩尔比)的用量为1∶2时,可以制备出相组成完全为Bi4Si3O12的粉体。By using Bi（NO3）3.5H2O and Si（OC2H5）4 as raw materials,powder Bi4Si3O12 was successfully synthesized by chemical solution decomposition（CSD） technique.The phase composition and morphological characteristics of Bi4Si3O12 particles were analyzed and observed by X-ray diffraction and scanning electron microscopy,and investigated the dosage of TEOS effect the phase composition of the powders.A single phase Bi4Si3O12 powder was obtained by using precursor calcined at 650℃ for 1h.The size of particles are distributed from 3 to 5 micrometers,it take on porous network structure that made of many crystal grains,the size of crystal grains are distributed from 300 to 500 nanometers.Bi4Si3O12 powder was obtained by using 2.66 times the theoretical dosage of TEOS.

关 键 词：Bi4Si3O12 化学溶液分解法 多孔网状结构 

分 类 号：TB34[一般工业技术—材料科学与工程]