(K_xNa_(1-x))_(0.94)Li_(0.06)NbO_3陶瓷的相变特性和压电性能  

Phase Transitional Characteristic and Piezoelectric Propertie sof (K_xNa_(1-x))_(0.94)Li_(0.06)NbO_3 ceramics

作　　者：钮效鹍[1] 郑增艳 

机构地区：[1]石家庄学院学报编辑部,河北石家庄050035 [2]石家庄市第14中学,河北石家庄050091

出　　处：《石家庄学院学报》2009年第3期13-15,共3页Journal of Shijiazhuang University

摘　　要：利用传统陶瓷烧结工艺制备了(KxNa1-x)0.94Li0.06NbO3无铅压电陶瓷,研究了该系列陶瓷的微观晶体结构和压电性能.结果表明,随着组分的变化室温下该系列陶瓷呈现出2个正交-四方相界,分别位于x=0.40和x=0.60附近;组分x的变化对陶瓷的压电性能影响显著,其中x=0.45的(K0.45Na0.55)0.94Li0.06NbO3陶瓷表现出最优异的压电性能(d33=205 pC/N,kp=48.5%).Lead-free （KxNa1-x）0.94Li0.06NbO3 piezoelectric ceramics were prepared by conventional ceramic sintering technique and their crystalline mierostructure and piezoelectric properties were studied. The results show that there exist two orthorhombic-tetragonal phase boundaries with the increasing of x which appear near x=0.40 and x=0.60, respectively. The piezoelectric properties are affected obviously by the change of x. Of all the （KxNa1-x）0.94Li0.06NbO3 ceramics, （K0.45Na0.55）0.94Li0.06NbO3 displays the best piezoelectric properties（d33=205 pC/N, kp=48.5%）.

关 键 词：无铅陶瓷 晶体结构相变 压电性能 

分 类 号：TM282[一般工业技术—材料科学与工程]