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。
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 decreased with inceasing x and the ceramic with x=0. 85 exhibited the following optimum properties= piezoelectric constant d33 = 136 pC/N, eleetromeehanieal coupling coefficient kp = 39%, mechanical quality factor Om = 146, dielectric constant cr =1 327 and dielectric loss tan δ=0. 021.
出处
《机械工程材料》
CAS
CSCD
北大核心
2009年第10期43-45,共3页
Materials For Mechanical Engineering
基金
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)
关键词
无铅压电陶瓷
微观结构
铌酸钾钠锂
lead-free piezoelectric ceramic
microstructure
K0. 47 Na0. 47 Li0.06 NbO3
