Piezo-electric transducer having electrodes that adhere well bot

Details Piezo-electric transducer having electrodes that adhere well bot Piezo-electric transducer having electrodes that adhere well bot

1988-04-28

1990-04-03

Steinberger, Brian S.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

310366, H04R 1700

Patent

active

049145657

ABSTRACT:
The invention is directed to a piezo-electric transducer having electrodes that adhere well both to ceramic as well as to plastics and that are composed of intrinsically conductive plastic. The invention is also directed to a method for the manufacture thereof. A conductive polymer layer is produced on the surface of a piezo-ceramic component by chemical or anodic oxidation of a monomer. The monomers are selected from the class of 5-member heterocycles containing sulfur or nitrogen as heteroatom, or aniline, azuline, or derivatives of the said compounds. The components provided with the economical electrodes can be advantageously composed to form sandwich-like transducers having plastic intermediate layers that exhibit good electro-acoustical properties.

REFERENCES:
patent: 3586889 (1971-06-01), Kolter
patent: 3979565 (1976-09-01), McShane
patent: 4054714 (1977-10-01), Mastrangelo
patent: 4609845 (1986-09-01), Soni et al.
patent: 4677337 (1987-06-01), Kleinschmidt et al.
patent: 4786837 (1988-11-01), Kalnin et al.
Dr. Frieder Schuh, "Enzyklopadie Naturwissenschaft und Technik", 1976, Litton Educational Publishing, Inc.

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