模板膜法制备织构化的CSBT铁电陶瓷工艺研究  

Process Research on Textured CSBT Ferroelectric Ceramics Prepared by Template Method

作　　者：张丰庆[1,2] 孙康宁[1] 范素华[3] 陈扬[2] 王营营[2] 王翠娟[2] 

机构地区：[1]山东大学材料液固结构演变与加工教育部重点实验室,山东省工程陶瓷重点实验室,济南250061 [2]山东建筑大学材料科学与工程学院,济南250101 [3]山东女子学院,济南250300

出　　处：《人工晶体学报》2014年第12期3124-3128,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金(81171463;50872075;51272142)

摘　　要：探讨了在NaCl(100)衬底上制备Ca0.4Sr0.6Bi4Ti4O15(CSBT)铁电薄膜的最佳制备工艺过程,匀胶速度为2500r/min,热解温度为350℃,退火温度为700℃,退火时间为300 s制备的CSBT铁电薄膜具有较好的钙钛矿相,相对较高的a轴取向度;以制得的CSBT薄膜为模板,采用模板晶粒生长法诱导其铁电陶瓷粉体织构化生长。结果发现:引入CSBT模板膜后,铁电陶瓷块体的a轴择优度提高,半峰宽减小,垂直于平面晶粒数量增加,有利于陶瓷铁电学性能的提高。The preparation process of a-axis oriented CSBT films deposited on Na Cl（ 100） substrates were discussed. With the process parameters of spin coating speed of 2500 r / min,pyrolysis temperature of 350℃,annealing temperature of 700 ℃ and holding time of 300 s,the CSBT ferroelectric films show a higher degree of a-axis orientation with pure perovskite phase. Using the CSBT thin films prepared as templates to induce the textured growth of the ferroelectric ceramic powders,and experimental results show that after the induction of CSBT templates, the ferroelectric ceramics show a-axis preferred orientation,lower full width at half maximum（ FWHM）,and increased amount of grains perpendicular to the plane. This is conductive to the improvement of the electrical properties of ceramics.

关 键 词：铁电薄膜 织构化陶瓷 CSBT 模板晶粒生长 择优取向 

分 类 号：TQ174.75[化学工程—陶瓷工业]