| abstract |
(57) [Summary] [Constitution] Pore diameter is 0.05-5 mm and porosity is 5 Porous piezoelectric ceramics having 0 to 85% spherical continuous air holes, a piezoelectric composite material in which the open air holes are replaced with a resin, and a pore diameter of 0.05 to 5 mm, In addition, a porous piezoelectric ceramic having spherical open pores with a porosity of 50 to 85% is prepared, a liquid resin is allowed to penetrate into the open pores, and the liquid resin is cured as it is. Manufacturing method of piezoelectric composite material. According to the present invention, it is possible to provide a piezoelectric composite material in which the acoustic impedance is reduced to the same level as the acoustic impedance of a living body or water and the polarization treatment is easy. Further, this material can be manufactured by the manufacturing method of the present invention. |