Why Is Piezo Material Crystals The Most Trending Thing Now

  Piezo Material is each used in different components. Such as PZT- 4 has a higher coupling coefficient (kp) and dielectric constant (ε), smaller dielectric loss (tanδ), these characteristics determine the material that is adapted to piezo tube for ultrasound underwater comunications  acoustic emission transducer and high voltage occurrence of components,piezoelectric piezometer for therary device . PZT - 5A also has a high coupling coefficient (kp) and dielectric constant (ε). However, the dielectric loss is relatively large and the quality factor (QM) is small. Therefore, it is suitable for receiving elements of underwater acoustic and ultrasonic transducers, such as NDT and diagnostic transducers, hydrophone and the like. PZT - 6B has a high quality factor (QM) and can be used to make filters. Bing - Huei Chen Adds Nb2O5 modifier to PZT to realize the substitution of Nb + 5 ions for Ti + 4 ions through cation holes. The experimental results show that Nb2O5 can effectively reduce the sintering temperature of PZT (1100 ℃ ~ 1 310 ℃), the best piezoelectric performance is at 1250 ℃, d33 = 385PC / N, kp = 0.62, Qm = 50 and resonance frequency of 200 kHz, high power PZT material piezoelectric disc is suitable for piezoelectric sprayers, ultrasonic cleaning transducer.On the basis of PZT, people have developed PZT-based ternary system,quaternary system and other multi-system piezoelectric ceramics. The properties of the piezoelectric ceramic can be adjusted in the wider range, and the piezoelectric ceramic system with excellent performance has been obtained, which meets the requirements of piezoelectric devices in different fields. piezoelectric disc transducer generator Piezoelectric ceramics are widely used in electric field driven mechanical and electrical equipment to generate resonance. However, experiments show that under low-power resonance, the performance of the low cost electrode piezo disc piezoelectric ceramic is always the same even if vibrated for a long time. However, driven by high power, the stability of the ceramic decreases, while other properties also decrease. An experimental study by W. P. Chen found that the reason for this is that the temperature of the ceramic surface rises significantly when oscillated at high frequency. Thus undermining the normal process of ceramic re-aging,brass piezoelectric transducer disc is resulting in decreased performance. This makes high-power piezoelectric material research and development imperative. At present, the research in this area is successfully applied to high-power transducers with PZT, such as Pz24 made by Ferroperm Co. in Denmark. Another example is the American Piezoceramic APC-841, which can produce a piezoelectric transformer with output power above 30W. For multilayer chip devices, we expect the piezoelectric ceramic to have high relative permittivity (ε) and low dielectric loss tan δ at low temperature sintering.