RESEARCH OF TECHNOLOGY FOR CREATING HIGH-TEMPERATURE TEXTURED MATERIALS FOR MANUFACTURING MULTILAYER PIEZO TRANSDUCER ELEMENTS

Background. The most important stimulus for the study of piezoceramic materials is the increasing requirements for extending the operating temperature range, improving the measurement characteristics, and the stability to destabilizing factors of the devices created on their basis. However, along with a search for new promising materials and refinement of manufacturing technology to solve the above problems, the development of high-temperature textured materials for manufacturing multilayer piezoelectric transducer elements is becoming increasingly necessary. Materials and methods. Research methods were chosen based on the possibility of obtaining the most complete information about the change in the structure and properties of the material after sintering and polarization of products. When carrying out research, X-ray structural, radiographic, metallographic and electron-microscopic analyses were used. The measurements of mechanical and electrical strength, fracture resistance, dielectric permittivity, piezoelectric and segmented elastic characteristics of the products were carried out in the course of the work. Results. The technology of multilayer piezo packages production has been developed, the results of the technology of solid solution system piezoceramics production have been obtained, the structure, dielectric and piezoelectric properties of ceramics in the temperature range 20÷600 ℃ have been studied. Experimental samples of multilayer piezoelements were made.