高Qm无铅铌酸钠钾压电陶瓷及中频谐振器

2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics Pub Date : 2007-05-27 DOI:10.1109/ISAF.2007.4393359

Qiang Chen, Lin Chen, Qishou Li, Xiaoluo Shi, Zhiqiang Liu, Xi Yue, D. Xiao, Jianguo Zhu

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引用次数: 0

摘要

采用常规混合氧化法制备了具有高机械质量因子Qm的密度K4CuNb8O23改性(Na0.5K0.5)NbO3 (NKN:KCN)陶瓷。NKN:KCN陶瓷的Qm最大值可达1150,NKN:KCN陶瓷的平面机电系数kp保持较高的水平，约为40%。此外，NKN:KCN陶瓷的居里温度在380℃以上。基于这种无铅压电陶瓷，设计并制造了一种新型无铅中频(455 kHz)陶瓷谐振器。这种无铅陶瓷谐振器可用于遥控器。

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High Qm Lead Free Sodium Potassium Niobate Piezoelectric Ceramics and Middle Frequency Resonator

Density K₄CuNb₈O₂₃ modified (Na_0.5K_0.5)NbO₃ (NKN:KCN) ceramics with high mechanical quality factor Q_m were synthesized by using conventional mixing oxide process. The maximum value of Q_m of NKN:KCN ceramics reaches up to 1150, the planar electromechanical coefficient k_p of NKN:KCN ceramics maintains a relative high level, which is about 40%. Moreover, the Curie temperature of NKN:KCN ceramics is above 380 . Based upon this kind of lead-free piezoelectric ceramics, a new type of lead-free middle frequency (455 kHz) ceramic resonators were designed and produced. This kind of lead-free ceramic resonator can be used in the remote controller.

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2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics

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