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piezo discs crystal

piezoelectric disk pressure transducer

piezoelectric disk transducer

Piezoelectric transducers are designed to be closed in the fundamental frequency resonance. The housing of PZT material piezoceramic rings is made of engineering plastics. It can fix and protect metal and adhesive piezo ceramic sheets. Two electrode pins pass through the leads respectively to the electrodes of metal sheets and piezo ceramic sheets.The connection method of the surface can be soldered with a low-temperature conductive adhesive. 

The application range of the piezoelectric acceleration transducer can be roughly divided into two aspects: a piezoelectric vibrator and an electroacoustic transducer. The former is mainly used as an oscillator and a filter vibrator, and the The electric input method of the electric terminal,such as microphones and ultrasonic transducers, etc.,which are mainly used for energy conversion. With the development of piezoelectric ceramic material modification, piezo discs crystal transducers are used in measuring instruments, it is ultrasonic measuring water acoustics. such as transducers and medical instruments will play a greater role.

Ultrasonic motors use the inverse piezoelectric effect of piezoelectric ceramics to convert electrical energy into mechanical vibration, and then convert mechanical vibration into rotational (linear) motion of the motor through friction and drive the load. Piezoelectric ceramics as the vibration generator of ultrasonic motor, its performance of piezo disc element has a direct impact on the output performance of the motor. In this paper, P-41 and PMnS-PZN material is prepared by the traditional solid-state reaction method.the application of PZT piezoelectric ceramics is traveling by wave ultrasonic motors and the influence of piezoelectric performance on motor performance.The effects of P-41PMnS and PZT piezoelectric disk pressure transducer on the performance of piezoelectric ceramics were studied in terms of structure, properties, frequency temperature stability and polarization mode. 

The results show that both materials have good dielectric temperature stability, P-41 piezoelectric material piezo tube has obvious ferroelectric phase transition characteristics, PZT has ferroelectric phase transition characteristics. Simultaneous polarization process at the same time improves the performance instability caused by the in homogeneity of polarization regions and the presence of partitioning interface stress in the secondary polarization process, and at the same time,it shortens the polarization time and improves the output of the ultrasonic motor. The polarization condition of P--41 ceramic is 3 kV/mm, 120°C, and polarization is 15 min. The polarization condition of PZT piezo ceramic is 3.5 kV/mm, and the polarization at 140°C is 15 min.