Lam Kwok-Ho, Lin Dun-Min, Kwok Kin-Wing, Lai-Wa Chan H
Dept. of Appl. Phys. & Mater. Res. Centre, Hong Kong Polytech. Univ., Kowloon.
IEEE Trans Ultrason Ferroelectr Freq Control. 2008 Aug;55(8):1682-5. doi: 10.1109/TUFFC.2008.853.
A piezoelectric piezoelectric-metal-cavity (PMC) actuator was reported previously that can exhibit a large flexural displacement. In this paper, a lead-free piezoelectric ceramic was used as a driving element of the PMC actuator. Bi(0.5)(Na(0.725)K(0.175)Li(0.1))(0.5)TiO3 (abbreviated as BNKLT) is a soft-type piezoelectric ceramic with good piezoelectric properties at room temperature. Both the electrical and mechanical properties of the BNKLT PMC actuator were measured. With good piezoelectric coefficients and low density, the BNKLT ceramic has the potential to be used as the driving element of the lead-free actuator.
先前报道了一种能产生大弯曲位移的压电-金属-腔（PMC）致动器。在本文中，一种无铅压电陶瓷被用作PMC致动器的驱动元件。Bi(0.5)(Na(0.725)K(0.175)Li(0.1))(0.5)TiO3（简称为BNKLT）是一种在室温下具有良好压电性能的软型压电陶瓷。对BNKLT PMC致动器的电学和力学性能都进行了测量。由于具有良好的压电系数和低密度，BNKLT陶瓷有潜力用作无铅致动器的驱动元件。
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