高性能PZT陶瓷双晶片制备及猫中耳拾音实验研究

doi:10.3724/SP.J.1077.2010.00691

无机材料学报 ›› 2010, Vol. 25 ›› Issue (7): 691-694.DOI: 10.3724/SP.J.1077.2010.00691

高性能PZT陶瓷双晶片制备及猫中耳拾音实验研究

康厚墉¹, 吴拥真¹, 迟放鲁¹, 郭少波², 高娜¹, 潘铁政³

(1. 复旦大学附属上海市眼耳鼻喉科医院, 上海200031; 2. 中国科学院上海硅酸盐研究所, 上海200050; 3. 攀特电陶科技研发有限公司, 昆山211138)

收稿日期:2009-11-11 修回日期:2009-12-22 出版日期:2010-07-20 网络出版日期:2010-06-10
基金资助:
上海市科学技术委员会重点项目(06DZ22022, 08441900300); 复旦大学研究生创新基金; 短期国际访学资助项目

Fabrication of High Acoustic-Electric Efficient Piezoelectric Ceramic Bimorph Element and Pickup in Middle Ear of Cat

KANG Hou-Yong¹, WU Yong-Zhen¹, CHI Fang-Lu¹, GUO Shao-Bo², GAO Na¹, PAN Tie-Zheng³

(1. Shanghai Eye & ENT hospital, Fudan Univeristy, Shanghai 200031, China; 2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 3. Pante Electronic ceramic R&D center co. Ltd., Kunsan 211138, China)

Received:2009-11-11 Revised:2009-12-22 Published:2010-07-20 Online:2010-06-10

摘要/Abstract

摘要：

制备横向压电系数d₃₁高达-480pC/N和居里温度T_c达280℃的高性能PZT压电陶瓷材料, 再制成厚0.3mm、宽1.0mm和长度分别为3.5、4.0和4.5mm的压电双晶片(PCBE), 结合前置放大器制成声电换能器, 将其植入猫耳内并测试PCBE耦合于听骨链上的声学信号拾取能力. 结果表明: 制备的PCBE具有良好的声?电换能性能; 三种长度的PCBE均可全部植入猫耳鼓室, 拾取体外20~20000Hz声信号可获得较平坦的频响曲线, 长度为4.5mm的PCBE拾取信号最佳, 最大输出达-13.16 dB(0dB输入, 1.5 kHz时). 证实PZT压电双晶片可以制成鼓室内全植入式传声器.

关键词: 压电陶瓷双晶片, 横向压电系数, 声电换能, 中耳

Abstract:

A novel PZT piezoelectric ceramics with high d₃₁ (-480pC/N) and T_c (280℃) was developed to shape a long strip of piezoelectric ceramic bimorph element (PCBE), with 0.3 mm in thickness, 1.0 mm in width and three lengths (3.5, 4.0, 4.5 mm), which were assembled to the cantilever structure anchoring a Preamplifier, and were implanted totally into tympanic cavity of cat ear to analyze their ability of picking up acoustic signal. This study explores that the PCBEs have high efficient acoustic-electric performance. They can pick up 20-20000Hz acoustic signal with an approximate flat frequency curve when they are implanted the tympanic cavity of cat. The maximal output of -13.16 dB Volt p-p value (@1.5kHz, 0dB input) is picked up by the 4.5mm PCBE. This validates that PCBE might be totally implanted into tympanic cavity of cat ear as a piezoelectric microphone.

Key words: piezoelectric ceramic bimorph elements, transverse piezoelectric coefficient, acoustic-electric performance, middle ear

中图分类号:

TM282

康厚墉, 吴拥真, 迟放鲁, 郭少波, 高娜, 潘铁政. 高性能PZT陶瓷双晶片制备及猫中耳拾音实验研究[J]. 无机材料学报, 2010, 25(7): 691-694.

KANG Hou-Yong, WU Yong-Zhen, CHI Fang-Lu, GUO Shao-Bo, GAO Na, PAN Tie-Zheng. Fabrication of High Acoustic-Electric Efficient Piezoelectric Ceramic Bimorph Element and Pickup in Middle Ear of Cat[J]. Journal of Inorganic Materials, 2010, 25(7): 691-694.

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高性能PZT陶瓷双晶片制备及猫中耳拾音实验研究

Fabrication of High Acoustic-Electric Efficient Piezoelectric Ceramic Bimorph Element and Pickup in Middle Ear of Cat

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