| 摘要 |
PURPOSE:To efficiently manufacture a laminated actuator by obtaining a large-sized integrated sintered body in such a way that, after small-sized integrated sintered bodies are produced and both upper and lower end faces of the sintered bodies are polished, a prescribed number of sintered bodies thus prepared are piled up and sticking the bodies to each other by again baking the piled up body. CONSTITUTION:A small-sized sintered body 11 is produced by piling up green sheets composed mainly of Pb(Zr, Ti)O3 and degreasing and baking the piled up green sheets by thermally adhering the green sheets to each other by pressing. Then, after the upper and lower end faces of the sintered body 11 are polished, a plurality of sintered bodies thus prepared is piled up in a sealed container 1 and a large-sized sintered body 10 is obtained by sticking the sintered bodies 11 to each other in such a way that a weight 3 is placed on the uppermost sintered body 11 after ZrO2 powder 2 is put between the lower and upper surfaces of each sintered body 11 and particles of Pb3O4+ZrO2 are placed around the sintered bodies 11. Thereafter, after the large-sized crystal body, namely, the laminated sintered body 10 thus obtained is cut into pieces and side faces of the cut pieces are polished, external electrodes are formed and fitted to the cut pieces with a resin. Therefore, a decline in the yield by delamination and cracking during the degreasing operation can be prevented by shortening the degreasing time. |
