piezoelectric transducer to measure displacement

                            piezoelectric transducer to measure displacement

Researching on the ion-sprayed BaTiO3 coating piezo disc element have recently made new progress. It is microstructure of BaTiO3 coating, the cross-section of plasma BaTiO3 coating and the microstructure under EDM plasma sintering can be seen, and the part of plasma BaTiO3 coating can be seen. Porosity and vertical cracks obstruct the charge distribution. In contrast, the structure of the piezo electric disc is sintered SPS sample fine, it is identical grain structure, and the pores only appear at some grain boundaries. 

The structure of BaTiO3 piezo ceramic sphere is prepared by supersonic plasma spraying, without large cracks and pores, the coating is tightly bonded to the matrix, and the particles melt well. The density of the coating reaches more than 95% of the density of sintered ceramics. The coefficient piezoelectric material piezoelectric sensor changes significantly with temperature. It can be seen that the preparation of smart piezoelectric ceramic coatings by spraying,which  has a wide range of application prospects. After years of research, piezoelectric ceramics have made significant progress.

 It has become one of the important functional materials at home and abroad, and piezoelectric rings vibration sensoris widely used in the high-tech fields such as electronics, radar, aerospace technology, and computers.For the future development of piezoelectric ceramics, the hot trends have many aspects about frequency of piezoelectric tube : (1) the development of low-temperature sintering PZT piezoelectric ceramics. The development of low-temperature sintered PZT piezoelectric ceramics not only effectively guarantees the performance of ceramics, but also saves energy and achieves environmental protection.(2)mechanical transducer piezo Nano-ceramics have good mechanical properties, ductility, toughness and easy processing and molding. With the strengthening of people's environmental awareness, the use of lead-free piezoelectric ceramics such as nano ceramics as an alternative to leaded piezoelectric ceramics is an inevitable trend. (3) Plasma spraying for the preparation of piezo-electric coatings and its application is on-line monitoring of the service of various parts will replace various analog devices and complex monitoring systems in the future