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首页> 外文会议>China International Conference on High-Performance Ceramics >Effects of SiO_2 Substitution on Piezoelectric and Mechanical Properties of PMS-PZT Ternary Piezoelectric Ceramics
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Effects of SiO_2 Substitution on Piezoelectric and Mechanical Properties of PMS-PZT Ternary Piezoelectric Ceramics

机译：SiO_2取代对PMS-PZT三元压电陶瓷压电和力学性能的影响

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摘要

The effects of SiO_2 additives on microstructure, piezoelectric and mechanical properties were investigated for Pb_(0.98)Sr_(0.02)(Mn_(1/3)Sb_(2/3))_(0.05)Zr_(0.48)Ti_(0.47)O_3 (PMS-PZT) ternary system close to the morpho-tropic phase boundary. Piezoelectric coefficient (d_(33)) and electromechanical coupling factor (K_p) considerably deteriorated with the substitution of SiO_2 increased. On the other hand, the mechanical quality factor (Q_m) increased, the maximum value was 1800. Fracture strength of 1.0 wt% SiO_2 added the specimens reached to 106.54 MPa which was about 1.4 times higher than pure PMS-PZT ceramic. The rapid improvement of fracture strength probably due to the decrease of grain size, pore distribute and the second phase (redundant Si~(4+) ions) segregating on the grain boundary which enhanced the bond energy of grain boundary. The optimized concentration of SiO_2 doped PMS-PZT ceramics was 0.4 wt% for high power application: d_(33) = 300 PC/N, K_p = 0.51, Q_m = 1500, tanδ = 0.32% and the fracture strength was 88.5MPa.
机译：上的微结构，压电性能和机械性能SiO_2添加剂的影响进行了调查Pb_（0.98）SR_（0.02）（MN_（1/3）Sb_（2/3））_（0.05）Zr_（0.48）TI_（0.47）O_3 （PMS-PZT）三元体系接近吗啉嗜相界。与SiO_2的取代显着劣化的压电系数（D_（33））和机电耦合系数（K_p）增加。另一方面，机械品质因子（Q_m）增加，最大值为1.0％（重量）1800断裂强度SiO_2加入达到106.54兆帕试样，其约高1.4倍，比纯PMS-PZT陶瓷。的断裂强度可能是由于粒度的减小而迅速改善，孔分布和晶界，其增强的晶界的键能在第二阶段（冗余的Si〜（4+）离子）分离。 SiO_2的优化的浓度掺杂的PMS-PZT陶瓷为0.4％（重量）用于高功率应用：D_（33）= 300 PC / N，K_p = 0.51，Q_m = 1500，tanδ的= 0.32％，断裂强度为88.5MPa。

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