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Fine‐Scaled Piezoelectric Ceramic/Polymer 2‐2 Composites for High‐Frequency Transducer
Author(s) -
Zhang Ye,
Jiang Yun,
Lin Xiujuan,
Xie Rui,
Zhou Kechao,
Button Tim W.,
Zhang Dou
Publication year - 2014
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12859
Subject(s) - materials science , piezoelectricity , lead zirconate titanate , composite material , ceramic , ultrasonic sensor , pmut , dielectric , transducer , center frequency , sintering , composite number , acoustics , ferroelectricity , optoelectronics , electronic engineering , band pass filter , physics , engineering
A novel technique was utilized to fabricate fine‐scaled piezoelectric ceramic/polymer 2‐2 composites for high‐frequency ultrasonic transducers. Lead zirconate titanate (PZT) was used as raw material. Tape‐casted acetylene black tapes were used to define kerfs after sintering. A one‐directional supporter was utilized to avoid distortion of PZT elements. PZT elements with 20 ± 2 μm width exhibited good consistency in longitudinal direction. A resonant method was utilized to evaluate the piezoelectric and dielectric properties of the composites. A 72‐μm‐thick composite with an aspect ratio of ~3.6 exhibited a k t of 0.61 with satisfied piezoelectric and dielectric properties. A prototype high‐frequency ultrasonic transducer was fabricated and evaluated by an underwater pulse‐echo test. The center frequency was found to be 23.75 MHz, with −6 dB bandwidth of 5.5 MHz.