Ceramic Piezoelectric Transducers.
Semi-annual rept. Jan-Jul 77,
PENNSYLVANIA STATE UNIV UNIVERSITY PARK MATERIALS RESEARCH LAB
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Underpinning the whole effort to prepare new combinations of materials in closely interconnected microstructures is the basic work on ceramic processing. This work can contribute to a better understanding, and thus to better reproducibility of conventional PZT bodies, but its major thrust must be to provide the foundation of electroceramic competence necessary for processing the more sophisticated diphasic systems which are the major hope for significant advance. Significant progress has been made particularly in the tape casting studies and a number of the lamellar heterogeneous structures originally proposed have now been successfully fabricated. Also in the diphasic area a theoretical evaluation of the bounds of possible piezoelectric and pyroelectric properties which could be achieved for some of the simpler types of connectivity in linear elasto-electric materials has been accomplished. This is an essential first step toward the more general consideration of non-linear ferroic systems, where self-bias prestressing may be further exploited to modify possible properties in connected systems. Author
- Electrical and Electronic Equipment
- Ceramics, Refractories and Glass