Electrical Properties of Low Temperature Sintered Piezoceramics

In general, commercial PZT piezoceramics are sintered at temperature above 1200 degrees C. Here, one low-temperature sintering technology was developed for PZT piezoceramics by adding perovskite-type ferroelectrics with low sintering temperature, alternative to adding non-piezoelectric low-melting glass or eutectic oxides. Through solid state reaction mechanism, very densified piezoceramics of (Pb0.95Sr0.05)(Zr0.53Ti0.47)O-3 with 0.6PbTiO(3)-0.3Bi(Zn0.5Ti0.5)O-3-0.1BiFeO(3) as sintering additive were obtained below 1050 degrees C. The phase of (Pb,Bi,Sr)(Zr,Ti,Zn,Fe)O-3 solid solution piezoceramics was demonstrated to be single-phased perovskite structure and the measurements of dielectric, ferroelectric and piezoelectric properties showed good piezoelectric performance equivalent to PZT-8.