| Piezoelectric ceramics is a functional
ceramic material obtained by blending, synthesizing, shaping, sintering,
machining, putting electrodes, and polarizing with dc fields. Usually,
it can be used for electro-mechanical transducers, which have broad applications
in communication, home appliances, aeronautics, probing, computers, etc.
The static piezoelectric effect of piezoelectric ceramics is mainly utilized in piezoelectric lighter, gas stove, earthquake transducer, ignition/detonation, force shift, displacement, meters, etc. Its dynamic piezoelectric effect can be used in a wide range of frequencies, such as underwater sound, ultrasonic sound, information processing, etc. In the underwater sound frequency range (0.1~102 kHz), it is mainly used for receiving/transmitting transducers in sonar, fish detector and other underwater equipments. In the ultrasonic range (102~104 kHz), it is mainly used for ultrasonic probing, ultrasonic cleaning, ultrasonic diagnosis and treatment, ultrasonic holographic imaging, and piezoelectric transformer. In higher frequency range, it is used for filters and resonators.
Our company produces the following piezoelectric ceramic products: BaTiO3 piezoelectric ceramics, lead-titanate(PT) piezoelectric ceramics, lead-zirconate-titanate(PZT)piezoelectric ceramics, ternary system piezoelectric ceramics, high polymer piezoelectric materials, and compound piezoelectric materials. Among all these products, PT and PZT have been used to make high- and medium-frequency filters and resonators, underwater and ultrasonic sound transducers. The ternary system piezoelectric ceramics include Nb,Sb, Pb(NbMg)O3 system, and Pb(Nb,Co)O3 system, which have higher dielectric constant and electro-mechanical coupling coefficient, as well as proper mechanical quality factor. The high polymer piezoelectric material, whose light and soft nature allows it to be prepared in any dimension or shape to satisfy the customer's demand for various complicated transducers, has found wide applications in medical equipments and underwater sound transducers. The compound piezoelectric material is made into thin films or plates by adding zirconium-titanium-lead system piezoelectric ceramic powders into the high polymer material.