The Influence of Environment Temperature on the Degradation of Lead Zirconate Titanate Ceramic

Lead zirconate titanate (PZT) ceramic, as a kind of piezoelectric material, is widely used in the field of electronic industry because of its excellent piezoelectric characteristics and low cost. Research works found that during the working time of the PZT ceramic, an electrical degradation phenomenon will occur that is represented as the decreasing of the electrical resistance and piezoelectric properties and the increasing of leakage current. When increase the temperature of the work environment, the lifetime of the piezoelectric ceramic will be dramatically shorted. This work proposes to analyze the influence of working temperature on the lifetime of piezoelectric ceramic by detecting the changes of leakage current of piezoelectric ceramics under different temperature. The study has important significance on solving the abnormal fatigue aging problem of piezoelectric ceramic in the different working environment.