Application Of Pmn-Pt Piezoelectric Monocrystal In Wideband Transducer With Composite Rod Matching Layer

In view of the characteristics of high energy density, high piezoelectric constant, low frequency constant and good low frequency performance of PMN-PT piezoelectric monocrystal material, this paper studies the corresponding technology from the perspective of engineering application. Aiming at the weakness of PMN-PT piezoelectric monocrystalline material, such as low phase transition temperature, low coercivity field and fragile, and combining with specific application background and demand, the solution is given. A batch of PMN-PT piezoelectric monocrystal transducers were developed and tested for its voltage-resistance, temperature stability and acoustic performance. The results show that the PMN-PT piezoelectric monocrystalline material has obvious advantages of acoustic performance of transmission and reception, it also reflects good low-frequency broadband characteristics and can be used in the high-power composite rod matching layer broadband transducer. The research results can be used to guide the application of PMN-PT piezoelectric monocrystal in sonar.