PIEZOELECTRIC CERAMIC COMPOSITION OF HIGH PERFORMANCE MULTI-LAYER CERAMIC ACTUATORS FOR LOW TEMPERATURE SINTERING

摘要

PURPOSE: A piezoelectric composition is provided to use in a multilayer piezoelectric actuator for controlling piezoelelctric strain and to lower sintering temperature by 950 C. CONSTITUTION: A piezoelectric composition is a composition in which Li2CO3, Bi2O3, PbO and CuO are added to xPb(Mg_1/3 Nb_2/3)O3-yPbZrO_3-zPbTiO_3. X is 0.35-0.45, and y is 0.2-0.3, z is 1-x-y. The addition amount of Li_2CO_3, Bi_2O_3 and PbO is a weight parts, b weight parts, and c weight parts.