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The conversion efficiency is related to the choice of the transducer material, the vibration form, the structure of the mechanical vibration system (including the support mechanism), and the operating frequency. Therefore, the problem of the ultrasonic transmitter is solved. There are two materials for piezoelectric ceramic transducers: magnetostrictive metal and piezoelectric ceramics. A piezoelectric ceramic transducer is an electronic ceramic material with piezoelectric characteristics. The main difference from a typical piezoelectric quartz crystal that does not contain a ferroelectric component is that the crystal phases constituting its main component are ferroelectric crystal grains. Because Ceramics are polycrystalline aggregates with randomly oriented grains, so the spontaneous polarization vector of each ferroelectric grain is also lost.

If a transducer made of this piezoelectric ceramic is placed in water, then under the action of sound waves, charges will be induced at both ends of the transducer, which is a sound wave receiver. In addition, the piezoelectric effect is reversible. If an alternating electric field is applied to the piezoelectric ceramic sheet, the ceramic sheet will become thinner and thicker from time to time, and at the same time it will vibrate and emit sound waves. In order to make the ceramic exhibit macroscopic piezoelectric characteristics, the piezoelectric ceramic must be polarized in a strong DC electric field after firing, and the end face is subjected to multiple electrodes, so that the original disorderly oriented polarization vector is preferentially oriented in the direction of the electric field. After the electric field is eliminated, After the polarization treatment, the piezoelectric ceramic will maintain a certain macroscopic residual polarization strength, so that the ceramic has a certain pressure.

PiezoelectricCeramics (PZT) materials are categorized as functional ceramics. In sensors they make it possible toconvert forces, pressures and accelerations into electrical signals, and in sonic and ultrasonic transducers and actuators they convert electric voltages into vibrations or deformations.PiezoelectricCeramics materials are classified according to their chemical composition on the one hand, and by the specific application conditions on the other.

Application
1. ultrasonic cleaning trasnducer
2. ultrasonic welding tansducer
3. ultrasonic beauty transducer
4. ultrasonic underwater transducer
5. ultrasonic immersible transucer
6. ultrasonic screening transducer
7. ultrasonic cutting transducer
8. ultrasonic atomization transducer
9. ultrasonic emulsifier

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