Piezoelectric ceramic based material (PZT) of lead zirconate titanate with a Ag-containing complexes are valence compensation

摘要

Characteristics of the piezoelectric ceramic multilayer actuator which is based on a lead zirconate titanate is determined in large part by the compatibility of the PZT ceramic having a lower sintering temperature of the AgPd internal metallization during the simultaneous combustion. The Ag ions in the transformation of PZT has a high diffusivity in the (higher than 800 ℃) elevated temperatures, to act as an acceptor dopant for embedding the PZT system is important. Reduction of the noble metal palladium ratio that prevents diffusion is limited, diffusion of silver to the piezoelectric ceramic is increased, the proportion of silver is increased in the internal electrodes. Ag ⁺ ions is used to form the composition is the valence of the PZT-based compensation in accordance with the present invention. Deformation of the high level is maintained, ie, donor acceptor effect of this system is very similar to the action of a PZT-based modified without a conventional inner electrodes.