Compositions – Piezoelectric
Patent
1987-06-11
1996-06-18
Walsh, Donald P.
Compositions
Piezoelectric
264 63, 264 66, 501136, C04B 3546, C04B 3564
Patent
active
055274803
ABSTRACT:
This invention relates to new ceramic piezoelectric compositions having superior electrical properties, processes for the preparation of the new piezoelectric composition and applications for the new compositions. Specifically, a solid solution composition of 85.5-87.5 molar percent lead zinc niobate, 9.5-9.7 molar percent lead titanate and 3-5 molar percent of a barium titanate dopant or strontium titanate dopant has exhibited desirable electrical properties. This specific composition is well suited for use in a 3-1 connectivity composite, which can be used as a hydrophone. These compositions may be prepared by oxide sintering techniques utilizing extremely high purity materials, or alternatively, by a sol gel process.
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Bailey Alex E.
Jawed Inam
Ritter Andrew P.
Sutherland Audrey E.
Winzer Stephen R.
Chin Gay
Greaves John N.
Groth Henry J.
Martin Marietta Corporation
Walsh Donald P.
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