摘要
分别采用两步预烧工艺和传统一次预烧工艺制备了0.13Pb(Ni_(1/3)Nb_(2/3))O_3-0.01Pb(Zn_(1/3)Nb_(2/3))O_3-0.86Pb_(0.82)Ba_(0.08)Sr_(0.10)Ti_xZr_(1-x)O_3(0.48≤x≤0.51)陶瓷粉体,再通过传统固相烧结法将两种粉体制备成压电陶瓷。研究了前驱体煅烧工艺和锆钛比对压电陶瓷性能的影响。结果表明,两种制备的压电陶瓷均为纯净的钙钛矿结构。两步预烧法可提高陶瓷的压电、机电性能,但介电性能降低。两步预烧法制备陶瓷的压电常数d33最高可达884pC/N,平面机电耦合系数kp可达66.4%,相对介电常数εr为5 742。采用传统固相法制备陶瓷的d33和kp分别降低到755pC/N和56.1%,ε_r则提高到7 324。
The 0.13 Pb（Ni_（1/3）Nb_（2/3））O_3-0.01 Pb（Zn_（1/3）Nb_（2/3））O_3-0.86 Pb_（0.82）Ba_（0.08）Sr_（0.1）Ti_xZr_（1-x）O_3（0.48≤x≤0.51）ceramic powders were prepared by the two-step pre-calcination process and the conventional one-step pre-calcination process respectively.Then the piezoelectric ceramics were fabricated from these two kinds of powders by the conventional solid phase sintering processes.The effects of the precursor calcinations process and the Zr/Ti ratio on the piezoelectric ceramic properties were investigated.The results showed that both of the piezoelectric ceramics exhibited pure perovskite structure,the two-step calcination process could significantly improve the piezoelectric and electromechanical properties,while the dielectric properties are degraded.The piezoelectric constant d33,electromechanical coefficient kp,and the relative permittivityεrof ceramics prepared by the two-step calcinations process were found to be 884 pC/N,66.4%,5 742,respectively.The piezoelectric constant d33,electromechanical coefficient kp and the relative permittivityεrof the ceramics prepared by the conventional solid state reaction method were found to be 755 pC/N and 56.1% and 7 324,respectively.
出处
《压电与声光》
CSCD
北大核心
2017年第5期702-706,共5页
Piezoelectrics & Acoustooptics
基金
国家自然科学基金资助项目(51577015)
关键词
锆钛比
两步预烧
压电性能
介电性能
Zr /Ti r at io
tw o -s tep p re -c a lcu la t io n
piezoelectric p ro p e r ty
d ielectric p ro p e r ty
