高取向Bi_4Ti_3O_(12)陶瓷样品的制备  

Preparation process Bi_4Ti_3O_(12) ceramics with higher grain orientation

作　　者：毛翔宇[1] 陈小兵[1] 

机构地区：[1]扬州大学物理科学与技术学院,江苏扬州225002

出　　处：《扬州大学学报（自然科学版）》2004年第1期17-20,共4页Journal of Yangzhou University：Natural Science Edition

基　　金：江苏省教育厅自然科学基金资助项目(01KJB140011)

摘　　要：采用多次球磨、预合成、真空干燥的工艺,制备了(0014)择优取向的Bi4Ti3O12(BTO)陶瓷样品.样品的c取向方向与样品成型时所加压力的方向基本一致;随烧结时间增加,样品的c取向率增大,烧结时间为16h的陶瓷样品的取向率达到0.96;测量了样品与轴线平行和垂直2个方向的电学性能,得到了各向异性的测量结果,为深入研究BTO的微观结构提供了一定条件.The high (00(14) ) orientated samples of Bi4Ti3O(12)() (BTO) ceramics were prepared by improved solid-state reaction method. The c-axis is nearly aligned with the direction of compression in sample formation. The orientation ratio increases with sintering time. The orientation ratio can be as high as (0.96) when the sintering time is 16 h. The electrical properties both parallel and perpendicular to the axis of cylinder sample were measured and the anisotropic results were obtained, which provide more experimental data to understand the microstructure of BTO.

关 键 词：铁电陶瓷 BI4TI3O12 择优取向 剩余极化 制备 电学性能 微观结构 各向异性 

分 类 号：TQ174.75[化学工程—陶瓷工业] TM22[化学工程—硅酸盐工业]