Explanation

ceramics materials with piezoelectric effect. Piezoelectric effects include positive piezo electricity and inverse piezoelectric effect. The so-called piezoelectric effect refers to the effect that some dielectric change their polarization state under the action of a force, causing the dielectric surface to be charged. The density of surface charges is proportional to the stress. On the contrary, apply an excitation electric field. The medium will produce mechanical deformation, and the strain is proportional to the electric field strength, which is called the inverse piezoelectric effect. It is mainly used to make piezoelectric filters, igniters, transformers, transducers, micro displacement meters and ultrasonic motors. It is the most widely used materials in functional ceramics.

Classification