| 摘要 |
PURPOSE:To improve strength against mechanical impact by baking metallic paste containing glass frit of borosilicate zinc/lead series glass uniformly onto the opposite end faces and the edge sections of a laminated ceramic. CONSTITUTION:Metallic paste containing glass frit of borosilicate zinc/lead series glass having thermal expansion coefficient approximately equal to that of a piezoelectric ceramic constituting a piezoelectric actuator is baked onto a pair of ceramic faces 11a, 11b crossing perpendicularly with the laminating direction of inner electrodes 12a, 12b and onto the edge sections 10a, 10b located closely to the ceramic faces 11a, 11b thus obtaining a metallized structure. When the metallic paste is baked and metallization is carried out, glass frit in the paste is dispersed into the porous piezoelectric ceramic thus filling the porous layer with glass and metallic layer. Consequently, strength against mechanical impact is improved for the ceramic faces 11a, 11b and the edge sections 10a, 10b at the opposite ends of the actuator. |
