According to Baidu question bank related information, piezoelectric ceramics, a kind of mechanical energy and electrical energy can be converted to each other's functional ceramic materials, belongs to the inorganic non-metallic materials. Commonly used piezoelectric ceramics are barium titanate system, lead titanate - lead zirconate binary system, and in the binary system to add a third ABO3-type compounds.
Piezoelectric ceramics are mainly used in the manufacture of ultrasonic transducers, hydroacoustic transducers, electroacoustic transducers, ceramic filters, ceramic transformers, ceramic frequency discriminators and so on.