Method of making a multilayer piezoelectric composite

Details Method of making a multilayer piezoelectric composite Method of making a multilayer piezoelectric composite

1994-09-26

1996-04-16

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

264 61, 310358, 310359, 501134, B32B 3104, B32B 3120

Patent

active

055078982

ABSTRACT:
A multilayer piezoelectric composite comprising a bonded laminate each layer of which is composed of a green sheet of a low-temperature sintering lead zirconate titanate piezoelectric ceramic. The temperature coefficient of a frequency constant of at least one layer has a polarity opposite to the polarity of those of the other layers. The bonded laminate is sintered at a temperature which does not produce any or almost any interdiffusion between layers so that the absolute value of the temperature coefficient of a frequency constant of the bonded laminate is smaller than the absolute value of the temperature coefficient of a frequency constant of any or one of the layers.

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Wersing, "Ferroelectrics", vol. 37, pp. 611-614.

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