Ceramic piezocomposites modeling and fabrication

In this work, the development of new family of ceramic piezocomposites with properties combining better parameters of PZT and PN type ceramics and 1-3 composites is described. New ceramic piezocomposites as well as fabrication methods were developed using an original microstructural design concept (MSD). The MSD concept is based on controllable substitution during composite formation of separate crystallites or crystallite groups making a polycrystals by pores, crystallites with other composition and/or structure or amorphous substances, all with preliminary choice of chemically, thermally and technologically compatible components and FEM modeling of ceramic composite properties. Comprehensive FEM and FDM modeling taking into account real ceramic piezocomposite microstructure was performed. Complex sets of elastic, dielectric, and piezoelectric parameters of ceramic piezocomposites were systematically studied using impedance spectroscopy approach and ultrasonic method.