机械激活前驱体法制备BaTi_2O_5  

Barium Dititanate Obtained by Mechanical Activation

作　　者：尤金发[1] 高倩[1] 陈晓虎[1] 

机构地区：[1]华侨大学材料科学与工程学院,福建厦门361021

出　　处：《陶瓷学报》2013年第2期167-170,共4页Journal of Ceramics

基　　金：福建省自然科学基金资助项目(编号:E0310021)

摘　　要：以BaCO3和TiO2为原料通过高频共振机械激活获得BaTi2O5前驱体,并在1200℃保温3h烧结制得BaTi2O5块体。通过XRD、SEM等分别分析了机械激活过程中前驱体的变化以及烧结体相成分和显微结构。结果表明:BaTi2O5烧结体的晶粒形貌为具有异向生长特征的棒状结构,其居里相变温度约为350℃,居里点的最大介电常数约为232(100kHz)。The BaTi205 was synthesized from BaCO3 and TiO2 by mechanical activation. The powders were milled using steel balls in steel container for 3 hours for activation and then calcined at 1200℃ to obtain BaTi205. The sintered BaTi205 body has the anisotropic growth of the rod-like structure. The maximum permittivity of the sintered BaTi205 body was 232 at the Curie temperature of 350℃ and the frequency of 100kHz.

关 键 词：BaTi2O5 机械激活 介电性能 CURIE温度 

分 类 号：TQ174.75[化学工程—陶瓷工业]