[Bi_(0.5)(Na_(1-x-y)K_xAg_y)_(0.5)]_(0.96)Ba_(0.04)TiO_3无铅压电陶瓷的制备及性能研究  

Studies of [Bi_(0.5)(Na_(1-x-y)K_xAg_y)_(0.5)]_(0.96)Ba_(0.04)TiO_3 Lead-free Piezoelectric Ceramics

作　　者：毛丽君 廖运文[1,2] 蒲红玉[1,2] 陈小明 王怀平 李伟 刘育芳 

机构地区：[1]四川省化学合成与污染控制重点实验室,四川南充637009 [2]西华师范大学化学化工学院,四川南充637009

出　　处：《西华师范大学学报（自然科学版）》2010年第4期386-389,399,共5页Journal of China West Normal University(Natural Sciences)

基　　金：四川省教育厅重点资助项目(2006A05);西华师范大学博士启动基金资助项目(06B059)

摘　　要：采用传统固相法制备出了新型BNT基多组元的[Bi0.5(Na1-x-yKxAgy)0.5]0.96Ba0.04TiO3(简称BNKABT-X-Y)无铅压电陶瓷,研究了该陶瓷的微结构和电学性能.X-射线衍射分析结果表明所研究组分陶瓷均能形成单一的钙钛矿结构.电学性能参数测试表明该陶瓷具有较好的压电性能,其中[Bi0.5(Na0.823K0.175Ag0.02)0.5]0.96Ba0.04TiO3陶瓷具有高的压电常数(d33=134 pC/N),高的机电耦合系数(kp=0.165),高的相对介电常数(εr=1295),机械品质因子Qm为94,介电损耗tanδ为0.036.A new system of BNT-base multi-component lead-free piezoelectric ceramics,[Bi0.5（Na1-x-yAgyKx）0.5]0.96Ba0.04TiO3,was prepared by conventional ceramic technique and the eletrical properties of the ceramics were studied.The analysis of X-ray diffraction shows that all ceramics investigated can form a pure perovskite phase.The ceramics display good piezoelectric and ferroelectric properties： piezoelectric constant d33=134 pC/ N,electromechanical coupling factor kp=0.165,relative dielectric constant εr=1295,mechanical quality factor Qm=94,dielectri loss tanδ=0.036.

关 键 词：钛酸铋钠 [Bi0.5(Na1-x-yKxAgy)0.5]0.96Ba0.04TiO3 压电陶瓷 压电性能 

分 类 号：TM282[一般工业技术—材料科学与工程]