无铅压电陶瓷(Sr_(2-x)Ca_x)_2Bi_4Ti_5O_(18)制备及其压电性能研究  

Preparation and Piezoelectric Property of Lead free Sr_(2-x)Ca_xB_(i4)Ti_5O_(18) Piezoelectric Ceramics

作　　者：朱沛英[1] 鲁青君[1] 吴新[1] 丁磊[1] 郝继功[1,2] 徐志军[1,2] 

机构地区：[1]聊城大学材料科学与工程学院,山东聊城252059 [2]聊城大学新能源和环境材料工程中心,山东聊城252059

出　　处：《聊城大学学报（自然科学版）》2009年第1期60-61,67,共3页Journal of Liaocheng University:Natural Science Edition

基　　金：国家自然科学基金资助项目(50602021);国家863资助项目(2006AA03Z437);聊城大学大学生科技文化创新项目(SRT07048CL2)

摘　　要：采用固相合成法制备了铋层状无铅压电陶瓷Sr2-xCaxBi4Ti5O18(SCBT)(0≤x≤0.2).利用XRD对900℃合成出的粉体进行了表征,结果显示粉体相结构是Aurivillius结构相.通过SEM形貌分析可以看出1160℃保温2h烧结出的陶瓷为片状结构.研究结果表明SCBT陶瓷的居里温度、矫顽场随钙含量的增加而增加.Bismuth layer Sr2-xCaxBi4Ti5O18（SCBT） （0≤x≤0. 2） ceramics were prepared by solid state reaction and their ferroelectric and dielectric properties were investigated. The XRD patterns of SCBT powders showed that the oxide compounds were Aurivillius phases. SEM micrographs show that the grains of SCBT ceramics were plate-like. The Curie temperature of SCBT lead free piezoelectric ceramics lie in the range 296℃≤Tc≤378 ℃ ,the coercive field of SCBT was increasedwith increasing the Ca content.

关 键 词：铋层状 无铅压电陶瓷 Sr2-xCaxBi4Ti5O18 

分 类 号：TM282[一般工业技术—材料科学与工程]