熔盐法合成板状钛酸铋微晶  

Synthesis of Bi_4Ti_3O_(12) Platelets by Molten Salt Method

作　　者：石江涛[1] 王秀峰[1] 于成龙[1] 江红涛[1] 王海震[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：《材料导报》2010年第22期95-98,共4页Materials Reports

基　　金：国家自然科学基金项目(50972087)

摘　　要：采用熔盐法制备了板状Bi4Ti3O12微晶。用示差扫描量热热重分析（DSC-TG）、X射线衍射（XRD）及扫描电镜（SEM）研究了不同温度对合成Bi4Ti3O12相结构与形貌的影响。结果表明，板状Bi4Ti3O12），2微晶的最佳合成温度为800-1000℃，低于800℃合成产物中容易出现杂相；1030℃时Bi4Ti3O12出现结构变化；1165℃出现杂相Na0.5Bi8.5Ti7O27；温度继续升高到1250℃时Bi4Ti3O12出现分解。实现板状Bi4Ti3O12微晶形貌可控的最佳温度范围为850～950℃。Bi4Ti3O12 platelets are synthesized by molten salt method. Phase evolution of Bi4Ti3O12 platelets is analyzed by differential scanning calorimeter and thermo gravimetric（DSC-TG）, X-ray diffraction（XRD） and scanning electron mieroscope（SEM）. The results show that the best temperature range forBi4Ti3O12platelets synthesized is 800-1000℃. Below 800℃, impurity emerges; at 1030℃, the structure of part of Bi4TiaO12transforms; at 1165℃, Na0.5 Bi8.5 TiT O27 forms; when the temperature increases to 1250℃, Bi4 Ti3 O12 decomposes. The best temperature range of Bi4 Ti3 O12 morphology controlling is 850-950℃.

关 键 词：钛酸铋 板状微晶 晶种 熔盐法 

分 类 号：O782.4[理学—晶体学]