Piezoelectric Ceramic Element For Ultrasonic Transducer

Piezoelectric ceramics are mainly used to manufacture ultrasonic transducers, underwater acoustic transducers, electroacoustic transducers, ceramic filters, ceramic transformers, ceramic frequency discriminators, high voltage generators, infrared detectors, surface acoustic wave devices, electro-optic devices, ignition devices and piezoelectric gyroscopes.

Piezoelectric ceramics are a kind of electronic ceramic materials with piezoelectric properties The main difference from the typical piezoelectric quartz crystal without ferroelectric component is that the crystal phase of its main component is ferroelectric grain Because ceramics are polycrystalline aggregates with random grain orientation, the spontaneous polarization vector of each ferroelectric grain is also disorderly oriented In order to make the ceramics exhibit macroscopic piezoelectric characteristics, it is necessary to polarize the piezoelectric ceramics under strong dc electric field after they are fired and the end face is re electrode, so as to make the original chaotic orientation of their polarization vectors preferentially oriented along the direction of the electric field After polarization treatment, the piezoelectric ceramics will retain a certain macro residual polarization intensity after the electric field is cancelled, so that the ceramics have certain piezoelectric properties

Piezoelectric Ceramic Element For Ultrasonic Transducer_Ultrasonic Transducer_Pulisonic Ultrasonic

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