铌酸钾钠基无铅压电陶瓷材料的制备新技术

Lead zirconium titanate (PZT) ceramics and PZT-based ternary-component ferroelectrics are high-performance piezoelectric materials, which are widely used in sensors, actuators and other electronic devices. From the viewpoint of environmental protection, it is desired to develop lead-free materials. (K,Na)NbO3 (KNN) based ceramics, a kind of lead-free piezoelectric materials, is one of the best candidates for PZT duo to its high Curie temperature point and excellent piezoelectric properties. This paper summarized the new technologies for fabricating KNN-based lead-free piezoelectric ceramics, including doping method, powder synthesis, template grain growth, sintering method, and so on.