characteristics of several PZT piezoelectric ceramic materials

Publish Time: 2018-09-05 Origin: Site

PZT piezoelectric ceramics are polycrystals obtained by sintering lead dioxide, lead zirconate and lead titanate at a high temperature of 1200°C. It has a positive piezoelectric effect and a negative piezoelectric effect. PZT piezoelectric ceramics (lead zirconate titanate): where P is the abbreviation of lead piezoelectric element Pb, Z is the abbreviation of zirconium piezoelectric element Zr, and T is the abbreviation of titanium element Ti.

PZT is a binary solid solution of antiferroelectric phase PbZrO3 and ferroelectric phase PbTiO3, and has a perovskite structure. PbTiO3 and PbZrO3 is typical representatives of ferroelectrics and antiferroelectrics. Because Zr and Ti material belongs to the same subfamily, PbTiO3 and PbZrO3 have similar spatial lattice forms, but the macroscopic characteristics of the two are quite different. Titanium Lead acid material is a ferroelectric, its curie temperature is 492°C, while lead zirconate is an antiferroelectric, the curie temperature is 232°C, such a large difference has caused widespread concern.After studying the solid solution of PbTiO3 and PbZrO3, it was found that PZT has better piezoelectric and dielectric properties than other ferroelectrics. PZT materials piezo ceramic and doped PZT series ferroelectric piezo ceramics have become the focus of research in recent years.

High power emitting piezoelectric material PZT8 piezoelectric ceramic:The soldering piezoelectric ceramic element material has good piezoelectricity, high mechanical strength, high coercive field and low dielectric loss of strong field. It is mainly used for ultrasonic cleaning, powerful ultrasonic drilling, ultrasonic welding, scaler probes, ultrasonic beauty instrument probes, ultrasonic scalpel probes, cardiovascular therapy instrument probes, etc.

High-sensitivity receiving PZT5 material piezoelectric ceramic, The PZT material piezoelectric ceramic has high electromechanical coupling coefficient, it is suitable dielectric constant and high sensitivity. It is mainly used for high sensitivity transducers, flowmeter transducers, level gauge transducers, accelerometer transducers, ultrasonic transducers, etc.

PZT4 piezoelectric crystals sensor transceiver material,The piezoelectric ceramic material is between PZT8 and PZT5, considering the characteristics of both,which has higher sensitivity,lower dielectric loss and has little transmission power. It can be used as a transceiver for receiving and receiving at the same time. This material is most suitable. Ultrasonic atomizing transducers currently produced the piezoelectric ceramic material which have been put into mass production.

characteristics of several PZT piezoelectric ceramic materials

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