Piezoelectric ceramic compositions

Details Piezoelectric ceramic compositions Piezoelectric ceramic compositions

1973-08-24

1977-12-13

Cooper, Jack

Compositions

Piezoelectric

C04B 3546, C04B 3548

Patent

active

040627900

ABSTRACT:
Piezoelectric ceramic compositions having very high mechanical quality factors, high electromechanical coupling coefficients and high durabilities of the piezoelectric constants with cycling of mechanical impact, and comprising the quaternary system Pb(Zn.sub.1/3 Nb.sub.2/3)O.sub.3 -Pb(Mn.sub.1/3 Nb.sub.2/3)O.sub.3 -PbTiO.sub.3 -PbZrO.sub.3.

REFERENCES:
patent: 3594321 (1971-07-01), Ohno et al.
patent: 3640866 (1972-02-01), Nishida et al.

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