BLEND FOR MANUFACTURING PIEZOCERAMIC MATERIAL Russian patent published in 1996 - IPC

FIELD: piezo equipment. SUBSTANCE: blend for preparing piezoceramic material comprises lead, titanium, zirconium, bismuth, manganese, lantanum, nickel and barium oxides, the ratios of components being as follows (wt%): 63-64 PbO; 19-20 ZrO₂; 11-12 TiO₂; 0.8-1.0 Bi₂O₃; 0.25-39 MnO₂; 0.5-0.7 La₂O₃; 0.3-0.5 NiO; 2.7-3.0 BaCO₃, the claimed invention can be effective in manufacturing piezotransformers, piezoengines, altrasonic radiators, high-voltage generators and other piezoequipment using power modes. EFFECT: reduced dielectric permeability values, lower dielectric losses, high mechanical serviceability and wider range of operating temperatures and high piezoconstants of the piezoceramic material.