Abstract
In this study, in order to develop the composition ceramics for low loss and low temperature sintering multilayer piezoelectric actuator, PMN-PNN-PZT ceramics were fabricated using Li 2 CO 3 and Na 2 CO 3 as sintering aids, and their piezoelectric and dielectric characteristics were investigated according to the amount of MnO 2 addition. At the sintering temperature of 900, density and mechanical quality factor (Q m ) of specimen showed maximum value of 7.81[g/cm3], 1186 at 0.2wt% MnO 2 , electromechanical coupling factor (k p ), piezoelectric constant (d 33 ) of specimen showed the maximum value of 0.608, 377[pC/N] at 0.1wt% MnO 2 and dielectric constant (? r ) slightly decreased with increasing MnO 2 . At the composition ceramics sintered at 900 with 0.2 wt% MnO 2 , density, electromechanical coupling factor (k p ), mechanical quality factor (Q m ), dielectric constant (? r ) and piezoelectric constant (d 33 ) showed the optimum value of 7.81[g/cm3], 0.597, 1186, 919, 356[pC/N], respectively, for multilayer piezoelectric actuator application.
Published Version
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