Ternary and quaternary piezoelectric ceramics

Actually it is necessary to select according to different occasions and major contradictions. For the commonly radial mode piezoelectric tubes is used for the ternary and quaternary piezoelectric ceramics, piezoelectric ceramics can be divided into soft piezoelectric materials and rigid piezoelectric materials. Piezoelectric material between soft and hard is changing the mixing ratio and adding doping. Piezoelectric ceramics refer to polycrystalline ceramics obtained by mixing high-temperature sintering of solid oxides (zirconium oxide, lead oxide, titanium oxide, etc.) and solid-state reaction. The general term of PZT tube piezoelectric cylinders is a functional piezo ceramic material that can convert mechanical energy and electrical energy. Because of its good mechanical properties and stable piezoelectric properties, piezoelectric disc crystalas an important functional material  is force, heat, electricity and light sensitivity. ,which has been widely used in sensors, ultrasonic transducers, micro-displacement devices and other electronic components. With the continuous research and improvement of material technology in the electronic, information, aerospace and other high-tech fields with the rapid development , The production technology and application development of piezoelectric disc transducer for piezoelectric ceramics is containing high-intelligent new materials.which is a hot topic that people pay close attention to. According to the number of independent components in the PZT material,piezo disc pzt material  piezoelectric ceramics can be divided into a unitary system, a binary system, a ternary system and multi-element piezoelectric ceramics. BaTiO3 is a typical unitary ceramic ferroelectric, With the piezo crystal structure, piezo sphere sensor is  insoluble in water, it has large electromechanical coupling coefficient, simple preparation process and low cost, it is the earliest practical piezoelectric ceramic. In order to obtain ultrasonic plate transducer with more stable performance and higher curie temperature, people found that Ti4 + ion radius and Zr4 + ion radius are similar, and the chemical properties of the two ions are also similar. PbTiO3 and PbZrO3 can form continuous solid solution in any ratio.