Abstract
High-power piezoelectric characteristics of (Bi1/2Na1/2)TiO3(BNT)- and KNbO3(KN)-based ceramics at continuous driving were investigated. The selected compositions of BNT- and KN-based ceramics were 0.88(Bi1/2Na1/2)TiO3-0.04(Bi1/2Li1/2)TiO3-0.08(Bi1/2K1/2)TiO3doped with 0.6 wt% MnCO3[BNLKT4-8Mn0.6] and KNbO3-MnCO30.8 wt% [KN-Mn0.8] ceramics. It was found that the vibration velocityv0-Pof BNLKT4-8Mn0.6 and KN-Mn0.8 ceramics linearly increased up to approximately 0.8 and 0.6 m/s, respectively. The temperature increases of BNLKT4-8Mn0.6 and KN-Mn0.8 ceramics were approximately 5°C under continuous driving at the vibration velocity of 0.6 m/s.
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