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抗还原型PZT压电陶瓷的制备与性能
作者:尚勋忠 刘越彦 孙锐 郭金明 周桃生 常钢 何云斌 
单位:湖北大学材料科学与工程学院 功能材料绿色制备与应用教育部重点实验室 武汉 430062 
关键词:压电陶瓷 锆钛酸铅 稀土掺杂 抗还原气氛烧结 
分类号:TM282
出版年,卷(期):页码:2013,41(3):288-291
DOI:
摘要:

摘  要:采用固相法制备出可在低氧压和还原性气氛中烧结的压电陶瓷材料。材料最佳组成为:Pb0.95Sr0.05(Zr0.54Ti0.46)O3+0.03% (质量分数) CuO+0.05%Nd2O3+1.00% Sb2O3。通过施主和受主共掺杂,既抑制了烧结过程中氧空位扩散,又避免了Ti4+与自由电子结合转变成为Ti3+,使陶瓷保持了压电性能。结果表明:添加半径合适的稀土元素,是使陶瓷具有抗还原性能的关键之一。当烧结温度为1 050 ℃时,陶瓷压电应变常数d33 = 294 pC/N,平面机电耦合系数kp = 43.56%,相对介电常数εT33/ε0 = 1 333,介电损耗tan δ = 0.019 7。该材料可应用于与Ni、Cu等贱金属低温共烧的叠层压电器件中,能够大大降低器件的成本。

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Abstract: A piezoelectric ceramic, which can be sintered under low-oxygen condition and reducing atmosphere, was prepared by a solid state reaction method. The optimal composition was Pb0.95Sr0.05(Zr0.54Ti0.46)O3 with 0.03% in mass CuO, 0.05% Nd2O3 and 1.00% Sb2O3. It was found that through the donor and acceptor co-doping, the diffusion of oxygen vacancies was restrained, and the transformation of Ti4+ to Ti3+ was prevented, thus giving the superior piezoelectric properties of the ceramic. The results show that the addition of proper rare earth elements is closely related to the reduction-resistant performance. When the sintering temperature was 1 050 ℃, the optimum properties of the ceramic were achieved, i.e., d33 = 294 pC/N, kp = 43.56%, tan δ = 0.019 7, and εT33/ε0 =    1 333. This material could be used in the multilayer piezoelectric devices co-fired with base metals at low temperature, by which the production costs could be reduced.

 

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基金项目:
教育部新世纪优秀人才计划(NCET–09–0135);国家自然科学基金(11175062, 50972041);武汉市学科带头人计划(200951830550);湖北省人才项目(2007,2011)资助项目。
作者简介:
第一作者:尚勋忠(1972—),男,博士,副教授。 通信作者:何云斌(1972—),男,博士,教授。
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参考文献:

参考文献:
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