| 摘要 |
PROBLEM TO BE SOLVED: To resultantly facilitate and stabilize the control of the electric characteristics by a method wherein respective particles comprising particle component and grain boundary component are previously sintered for mixing, molding and baking these calcined particles later to control the solid phase reaction. SOLUTION: The particle component is mixed (3) and calcinated (9) in the air for the main component to be crushed (5) later for the formation of the calcined particles of the particle component. Besides, the particle component is added and mixed (6) and after the calcination in the air to be crushed (8) for the formation of the calcined particles of the particle component. Next, after the adjustment to make the mean particle diameter of the calcinated particles of the particle component exceed that of the calcinated particles of grain boundary component, the calcined particles of the particle component and grain boundary component are added and mixed (9) to be granulated by adding an organic binder for molding (10) in a specific shape. Next, the molding is deashed (11) in the air to be baked in the reducing atmosphere (12). Finally, after finishing the baking step, the surface of the element is coated with an electrode paste (13) to be heat-treated in the air (14) and then the reoxidation and the electrode seizure are simultaneously performed. |
