Ultrasonic transducers with functionally graded piezoelectric ceramics

被引：61

作者：

Ichinose, N ^{[1
]}

Miyamoto, N ^{[1
]}

Takahashi, S ^{[1
]}

机构：

[1] Waseda Univ, Sch Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2004年 / 24卷 / 06期

关键词：

broadband frequency spectrum; ceramic backing; functionally graded piezoelectric ceramics; green sheet technology; ultrasonic transducers;

D O I：

10.1016/S0955-2219(03)00599-5

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ultrasonic transducers used for measurement systems are required having a capability of generating a short time waveform ultrasonic pulse, i.e., a broadband frequency spectrum. In order to obtain the broadband transducer, functionally graded piezoelectric ceramics with a ceramic backing are fabricated and their ultrasonic performances are examined. Gradient of the piezoeleciric parameter is realized by sintering a layer-structured ceramic green body composed of piezoelectric ceramic calcined powder layers with various compositions or composed of green sheets containing calcined powder mixed with some organic materials. It has been found that the above transducer generates an ultrasonic wave with a broader frequency spectrum compared with that of the conventional one. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：1681 / 1685

页数：5

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