Shock Activation and Modification of PZT-95/5 Piezoceramics

This paper is about shock activation and modification of PZT-95/5 ceramics. The shock loading experiments of PZT-95/5 powder and block samples show that: in suitable conditions, the density (), piezoelectric strain constant (d33) and dielectric constant () of the samples can be increased and dielectric lost coefficient (tg %) be reduced. The results of X-ray diffraction, Scan Electronic Microscope and Transmission Electronic Microscope measurement are also given. It is concluded that the mechanism of activation can be attributed to pulverization of crystallites, crystal boundary damage, microcracks, defects increase and phase changed etc.