Piezoelectric composite material

Details Piezoelectric composite material Piezoelectric composite material

1992-12-04

1994-06-14

Nelson, Peter A.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428551, 428565, 252 629, 310358, 501134, C04B 3549

Patent

active

053209109

ABSTRACT:
A piezoelectric composite material including an organic matrix, and 72-78 % by volume of a piezoelectric ceramic powder dispersed in the matrix and consisting of 25-41.6 % by weight of a first group of lead titanate particles having a first average particle size, 25-41.6 % by weight of a second group of lead titanate particles having a second average particle size and 25-41.6 % by weight of a third group of lead titanate particles having a third average particle size. The first, second and third average particle sizes are different from each other and generally 2.5-4.5 .mu.m, 5-10 .mu.m and 20-40 .mu.m, respectively. At least a portion of the lead titanate particles of one of the first to third groups may be substituted with lead titanate zirconate having a similar particle size.

REFERENCES:
patent: 4695988 (1987-09-01), Banno
patent: 4874727 (1989-10-01), Ohya et al.
patent: 5246610 (1993-09-01), Banno et al.
patent: 5259099 (1993-11-01), Banno et al.

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