POROUS PIEZOELECTRIC CERAMIC TRANSDUCER

被引：27

作者：

MIZUMURA, K ^{[1
]}

KURIHARA, Y ^{[1
]}

OHASHI, H ^{[1
]}

KUMAMOTO, S ^{[1
]}

OKUNO, K ^{[1
]}

机构：

[1] JAPAN RADIO CO LTD,2-1-4 KAMIFUKUOKA SHI,SAITAMA 356,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1991年 / 30卷 / 9B期

关键词：

POROUS PB(ZR; TI)O3; PZT; PIEZOELECTRIC CERAMIC; PMMA; TRANSDUCER; ECHO SOUNDER;

D O I：

10.1143/JJAP.30.2271

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Porous piezoelectric ceramics of Pb(Zr, Ti)O3, (P-PZT), have been newly developed to apply to transducers in an echo sounder. The P-PZT was prepared from a mixture of PZT and poly-methyl-methacrylate (PMMA) powders. The piezoelectric characteristics of the P-PZT such as the dielectric constant (epsilon), voltage output constant (g constant), acoustic impedance (Z(c)) and Q were evaluated. The P-PZT was employed in an echo sounder of 200 kHz, and its transmitting and receiving properties were measured in water. In these measurements, the P-PZT showed suitable characteristics for the echo sounder, which required high sensitivity, wide frequency bandwidth and high resolution. High sensitivity was realized by the large g constant and low Z(c) of P-PZT which made the impedance matching with water much easier. In the acoustic response to the burst wave, the rise and fall time were shortened to 1/3 that of the conventional PZT transducer.

引用

页码：2271 / 2273

页数：3