Controlled-porosity piezoelectric ceramic

Details Controlled-porosity piezoelectric ceramic Controlled-porosity piezoelectric ceramic

1991-07-11

1992-09-01

Group, Karl

Compositions

Piezoelectric

501 12, 501 74, 501137, 2523157, C04B 3546

Patent

active

051436361

ABSTRACT:
The invention is a process to manufacture a controlled-porosity ceramic material by synthesizing an aerogel produced by hypercritical drying of a high-porosity gel.
Applications in the submarine acoustic field (active and passive sonars).

REFERENCES:
patent: 3892580 (1975-07-01), Messing
patent: 4402927 (1983-09-01), von Dardel et al.
patent: 4784794 (1988-11-01), Kato
Chemical Abstracts, vol. 109, Oct. 1988, p. 839, "Study and Preparation of Ceramic Particles as Piezoelectric Precursors of Modified Lead Titanate".
Chemical Abstracts, vol. 109, No. 26, Dec. 1988, p. 305, "Method for Manufacturing Molded Ceramic Precursors", Nippon Steel Corp., Columbus, Ohio U.S.

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