采用传统的陶瓷制备技术制备了0.95K0.47Na0.47Li0.06NbO3-0.05BaxSr1-xTiO3体系元铅压电陶瓷,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 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.
参考文献
| [1] | 肖定全.关于无铅压电陶瓷及其应用的几个问题[J].电子元件与材料,2004(11):62-65. |
| [2] | 肖定全,赁敦敏,朱建国,余萍.新型无铅压电陶瓷的研制[J].电子元件与材料,2004(11):13-15. |
| [3] | Dunmin Lin;Dingquan Xiao;Jianguo Zhu .Synthesis and piezoelectric properties of lead-free piezoelectric [Bi_(0.5)(Na_(1-x-y)K_xLi_y)_(0.5)]TiO_3 ceramics[J].Materials Letters,2004(5):615-618. |
| [4] | Yiping Guo;Ken-ichi Kakimoto;Hitoshi Ohsato .Dielectric and piezoelectric properties of lead-free (Na_(0.5)K_(0.5))NbO_3-SrTiO_3 ceramics[J].Solid State Communications,2004(5):279-284. |
| [5] | 尹奇异,赁敦敏,肖定全,朱建国,余萍.无铅压电陶瓷及其应用研究[J].金属功能材料,2004(06):40-45. |
| [6] | 赁敦敏,肖定全,朱建国,余萍,鄢洪建.铌酸盐系无铅压电陶瓷的研究与进展--无铅压电陶瓷20年专利分析之四[J].功能材料,2003(06):615-618. |
| [7] | Carlson CM.;Parilla PA.;Perkins JD.;Ginley DS.;Kozyrev AB. Oshadchy VN.;Pavlov AS.;Rivkin TV. .Large dielectric constant (epsilon/epsilon(0)> 6000) Ba0.4Sr0.6TiO3 thin films for high-performance microwave phase shifters[J].Applied physics letters,2000(14):1920-1922. |
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