| 摘要 |
PROBLEM TO BE SOLVED: To provide a grain boundary insulation type of stacked ceramic part little in dispersion of electric property and high in property reproducibility. SOLUTION: A green stack, where ceramic layers 1 having SrTiO3 for their main components and two layers of inner electrodes 2 are stacked alternately in plural numbers and then reactive layers 3 of the same composition as the ceramic layer 1 are arranged at its upper layer and lower layer, is cut into a predetermined green chip shape so that the inner electrodes 2 may be exposed each to opposed end faces, and next the degreasing of the green ship is performed. Next, the outer electrode 4 in the first layer is applied on the exposed inner electrode 2, and then the material of the same composition as the ceramic layer 1 is mixed with powder being adjusted into a fixed grain size after calcination in reductive atmosphere, and the mixture is packed in a backing sheath of 50-70% in apparent porosity. Then, the above sheathes are piled up into plural stages, and are baked in reductive atmosphere, and the outer electrode 5 in the second layer is applied on the surface of the outer electrode 4 in the first layer of the obtained sintered substance, and in air, the reoxidation treatment of the sintered material is performed at the same time as the baking of the outer electrode 5 in the second layer. |
