3-DIMENSIONAL CURVED SURFACE TYPE PIEZOELECTRIC TRANSFORMER AND MANUFACTURING METHOD THEREOF

摘要

Disclosed is a 3-dimensional curved surface type piezoelectric transformer, including a piezoelectric body formed of piezoelectric material and electrode parts formed on a first upper curved surface and a second upper curved surface of the piezoelectric body, respectively, to simultaneously generate normal strain and shear strain. The piezoelectric transformer is manufactured through powder injection molding, including a mixture preparation step of preparing a pellet for injection molding using a binder at a predetermined ratio (1st step); an injection molding step of subjecting the pellet to injection molding using a mold to have a predetermined shape, thus producing an injection molded body (2nd step); a binder removal step of removing the binder from the injection molded body, thus obtaining a degreased body (3rd step); and a sintering step of sintering the degreased body at a high temperature, thus manufacturing a final product (4th step).