Accession Number : ADD018614

Title :   Transducing Composite of Sintered Piezoelectric Ceramic Granules in a Polymer Matrix

Descriptive Note : Patent Application, Filed 30 Jul 97

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Kahn, Manfred ; Chase, Mark

PDF Url : ADD018614

Report Date : 30 Jul 1997

Pagination or Media Count : 19

Abstract : A piezoelectric ceramic-polymer composite is made of a substantially two-dimensional polymer matrix and a monolayer of sintered piezoelectric ceramic granules dispersed throughout the matrix so that each granule has an upper portion protruding from one side of the matrix and a lower portion protruding from the opposite side of the matrix. The composite is formed by partially embedding a monolayer of sintered piezoelectric ceramic granules in a pliable material, then partially covering the granules with a polymer resin, curing the resin to form a matrix and removing the pliable material. A transducer is formed by flattening the upper and lower portions of the granules to form coplanar top and bottom surfaces parallel to, but not coplanar with the surface of the matrix, then electroding the granule surfaces, attaching top and bottom cover plates, and sealing the transducer around the edges.

Descriptors :   *PATENT APPLICATIONS, *PIEZOELECTRIC MATERIALS, *PIEZOELECTRIC TRANSDUCERS, POLYMERS, MATRIX MATERIALS, EMBEDDING, SINTERING, GRANULES

Subject Categories : Electrical and Electronic Equipment
      Laminates and Composite Materials
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE