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Multicomponent piezoelectric ceramics material

Views: 4     Author: Site Editor     Publish Time: 2018-03-16      Origin: Site

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Multicomponent piezoelectric ceramics material

Multicomponent piezoelectric ceramics material


Through the replacement of Ba and Ti in BaTiO3 to control the Zr/Ti ratio on the basis of the replacement of equivalent ions and non-equivalent ions, as well as the method of adding trace impurities and oxides, the performance of piezo transducer for ultrasonic cleaning was successfully developed. It is BaTiO3 piezoelectric ceramic material and lead zirconate titanate, namely, PZT piezoelectric ceramics found ultrasonic plate transducer in the Pb(ZrxTi1-x)O3 system and tetragonal ferroelectric phase .With the three-phase ferroelectric phase coexisting. Near the phase boundary, with the increasing of titanium ion concentration, the orientation of the spontaneous polarization direction will change ring piezoelectric components. In this process, the crystal structure is unstable, and therefore The electrical activity and piezoelectric performance are significantly improved, the piezoelectric constant is 2 times that of BaTiO3, and the performance of piezo ceramic ring crystal in all aspects is much better than that barium titanate piezo ceramics. PZT-based ceramics are a functional material with promising development. A new situation in the application of piezoelectric ceramics is based on the lead zirconate titanate with a variety of elements.


The improving ternary and quaternary piezoelectric ceramics transducer also come into being. The multi-element piezoelectric ceramics can make up for the single piezo ceramics, and have the advantages of comprehensive piezoelectric, dielectric and mechanical properties. More ,A large number of piezoelectric plate crystalhave also shown that the combination of various relaxation has ferroelectrics PZT ceramics, as well as the ion-exchange and doping modification of piezoelectric ceramics of this system,piezoelectric plate vibration sensor can obtain the higher dielectric and piezoelectric properties. On the basis of the ternary system, a multipurpose piezoelectric ceramic material such as a special-purpose quaternary system has been developed, piezoelectric plate sensor makes the research of piezoelectric ceramics more promising.


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