Piezoelektrisches keramisches Material, und die Keramik verwendendes elektronisches Bauteil

摘要

A piezoelectric ceramic material having excellent mechanical strength, excellent resistance to chemicals, and excellent moisture resistance. The piezoelectric ceramic material of the present invention contains lead oxide, wherein a closed region (3) observed under a transmission electron microscope and defined by a plurality of crystal grains (2a,2b,2c) which constitute the sintered piezoelectric ceramic material and are adjacent to one another is predominantly formed of an amorphous glass phase (4).