周飞;

• 1:武汉船舶职业技术学院

摘要(Abstract)：

采用传统固相法烧结制备(1-x)K_(0.48)Na_(0.52)NbO_3-xLi_3SbCu_2O_6无铅压电陶瓷,研究了Li_3SbCu_2O_6的添加对陶瓷相结构、微观结构、电学性能的影响。结果表明:Li_3SbCu_2O_6是一种良好烧结助剂,固溶度为2.0 mol%,随着Li_3SbCu_2O_6含量增加,晶粒尺寸变大,液相增多,弛豫现象逐渐明显,整体表现出"软性掺杂"的特征。加入Li_3SbCu_2O_6后电滞回线不对称,由于存在空位缺陷,体系具有缺陷复合体,宏观表现出内偏电场Ei。当x=0.01时,陶瓷获得最佳的综合性能:d_(33)=109 pC/N,k_p=17%,Q_m=306,P_r=8.48μC/cm²,ε_r=250,tanδ=0.006。

关键词(KeyWords)： 无铅压电陶瓷;铌酸钾钠;介电性;铁电性;压电性

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 周飞;

DOI: 10.16521/j.cnki.issn.1001-9642.2016.10.016

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