流延法制备SrBi_4Ti_4O_(15)压电陶瓷  

PREPARING OF SrBi_4Ti_4O_(15) PIEZOELECTRIC CERAMICS BY TAPE CASTING

作　　者：刘涛[1] 曾令可[1] 税安泽[1] 任雪潭[1] 王书媚[1] 刘艳春[1] 顾永军[2] 

机构地区：[1]华南理工大学材料科学与工程学院,广州510640 [2]河南科技大学材料科学与工程学院,洛阳471003

出　　处：《陶瓷学报》2007年第1期47-51,共5页Journal of Ceramics

摘　　要：采用固相法和熔盐法(KCl-NaCl 作为熔盐)合成 SrBi_4Ti_4O_(15)陶瓷粉体,用模板晶粒定向技术(TGG)获得具有各向异性晶粒定向排列的 SrBi_4Ti_4O_(15)陶瓷。实验中,着重探讨了流延成型的工艺。分析表明,以预烧温度900℃模板和900℃固相粉体在1200℃烧结合成制得的流延片的取向度(79.52%)较高,定向排列程度较高,但由于实验过程中,添加了大量有机溶剂,所以有许多缺陷存在。以900℃模板在1200℃烧结的流延陶瓷片的介电性能最好。SrBi4Ti4O15 ceramic powders were synthesized by molten salt synthesis method （MSS） and conventional solid phase process （CS）. SrBi4Ti4O15 ceramics with oriented consolidation of anisotropic particles was prepared by template grain growth （TGG）. In this study, tape casting technique was explored. Experiment results showed, the degree of orientation was higher when SrBi4Ti4O15 ceramics was prepared by tape casting at 1200℃ with SrBi4Ti4O15 ceramics powders synthesized by MSS and CS at 900℃. However, there are many defects because a large amount of organic solvents are added in the course of the experiment. Dielectric property of SrBi4Ti4O15 ceramics prepared by tape casting was the best.

关 键 词：SRBI4TI4O15 压电陶瓷 流延法 铋层状结构 

分 类 号：TQ174.75[化学工程—陶瓷工业]