Piezoelectric composite with anisotropic 3-3 connectivity

Details Piezoelectric composite with anisotropic 3-3 connectivity Piezoelectric composite with anisotropic 3-3 connectivity

1995-09-22

1997-01-07

Bonner, Melissa

Compositions

Piezoelectric

252 629PZ, 501 32, 501134, 501136, 501137, 501 95, 428260, 428272, 428289, 428290, C04B 3500

Patent

active

055913725

ABSTRACT:
A piezoelectric or electrostrictive composite exhibiting anisotropic 3-3 connectivity with a dense ceramic phase and an infiltrate polymer phase. The ceramic phase is an interconnected ceramic lamelli structure that is arranged substantially parallel in one direction. The ceramic lamelli have greater connectivity in the z direction than in the x and y directions, while the connectivity in the x and y directions are essentially equal.

REFERENCES:
patent: 4122041 (1978-10-01), Mahler
patent: 4330593 (1982-05-01), Shrout et al.
"Injection Molded Fine-Scale Piezoelectric Composite Transducers", LJ Bowen, et al. 1993 Ultrasonics Symposium, 1993 IEEE, pp. 499-503. no month.
"Modeling 1-3 Composite Piezoelectrics: Thickness-Mode Oscillations", W A Smith, B A Auld, IEEE Trans. on Ultrasonics Ferroelectrics and Frequency Control, vol. 38, No. 1, Jan. 1991.
"Properties of Composite Piezoelectric Materials for Ultrasonic Transducers", W A Smith, et al., 1984 Ultrasonics Symposium, IEEE 1984, pp. 539-544. no month.
"The Role of Piezocomposites in Ultrasonic Transducers", W A Smith, 1989 Ultrasonics Symposium, 1989 IEEE, pp. 755-766. no month.
"Development of 1-3 Ceramic-Air Composite Transducers", C. Oakley, et al., SPIE vol. 1733 (1992) pp. 274-283. no month.
"Freeze-formed Silica Fibers", W. Hahler, et al., May 1980, Central Research & Development Dept., E.I. duPont de Nemours & Company, Wilmington, Delaware.

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