Method of detecting sound in water using piezoelectric-polymer composites with 0-3 connectivity
US4977547A · kind A · utility
11Cited by
1References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 15, 1988 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Nov 15, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/852
Abstract
A hydrophone device is provided with a piezoelectric ceramic-polymer composite of 0-3 connectivity in which the piezoelectric filler comprises a solid solution of PBTiO.sub.3 -BiFeO.sub.3 wherein the solid solution contains 50-80 wt. % of the BiFeO.sub.3. The piezoelectric ceramic-polymer composite has large hydrostatic piezoelectric charge and voltage coefficients which are desirable in hydrophone devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.