0.95K0.47Na0.47Li0.06NbO3-0.05BaxSr1-xTiO3无铅压电陶瓷的微观结构与性能
Microstructure and Properties of 0.95K0.47Na0.47Li0.06NbO3-0.05BaxSr1-xTiO3 Lead-free Piezoelectric Ceramics
摘 要
采用传统的陶瓷制备技术制备了0.95K0.47Na0.47Li0.06NbO3-0.05BaxSr1-xTiO3体系无铅压电陶瓷,研究了该体系陶瓷的微观结构与压电、介电性能.结果表明:在1 165 ℃烧结4 h的条件下,该体系陶瓷能形成单一的钙钛矿型结构;随着x值的增大,陶瓷的压电、介电性能先增后降,并在x为0.85时性能达到最佳,其压电常数为136 pC/N,机电耦合系数为39%,机械品质因数为146,介电常数为1 327,介质损耗为0.021.
微观结构
铌酸钾钠锂
lead-free piezoelectric ceramic
microstructure
K0.47Na0.47Li0.06NbO3
Abstract
The 0.95K0.47Na0.47Li0.06NbO3-0.05BaxSr1-xTiO3 lead-free piezoelectric ceramics were prepared by traditional ceramic sintering technique,and their microstructure,piezoelectric and dielectric properties were analyzed.The results indicate that the ceramics sintered at 1 165 ℃ for 4 h in air exhibited a single structure.The properties of the ceramic first increase then decrcased with inceasing x and the ceramic with x=0.85 exhibited the following optimum properties: piezoelectric constant d33 =136 pC/N,electromechanical coupling coefficient kp=39%,mechanical quality factor Qm=146,dielectric constant εr=1 327 and dielectric loss tan δ=0.021.
中图分类号 TM282
所属栏目 材料性能及其应用
基金项目 安徽省教育厅青年教师科研计划资助项目(2007JQl148);安徽省教育厅重点项目(KJ2008A068);合肥学院科研发展基金资助项目(07KY001ZR)
收稿日期 2008/9/16
修改稿日期 2009/5/15
网络出版日期
作者单位点击查看
备注尹奇异(1978-),男,安徽安庆人,讲师,硕士.
引用该论文: YIN Qi-yi,YUAN Shuo-guo,CHEN Cai,TIAN Chang-an,ZHANG Ling-yun. Microstructure and Properties of 0.95K0.47Na0.47Li0.06NbO3-0.05BaxSr1-xTiO3 Lead-free Piezoelectric Ceramics[J]. Materials for mechancial engineering, 2009, 33(10): 43～45
尹奇异,袁硕果,陈才,田长安,张凌云. 0.95K0.47Na0.47Li0.06NbO3-0.05BaxSr1-xTiO3无铅压电陶瓷的微观结构与性能[J]. 机械工程材料, 2009, 33(10): 43～45
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【9】GUO Yi-ping,KAKIMOTO K,OHSATO H.Phase transitional behavior and piezoelectric properties of (Na0.5K0.5)NbO3-LiNbO3 cermaics[J].Appl Phys Lett,2004,85(18):4121-4123.
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