| 摘要 |
PURPOSE:To prevent the generation of bubbles on a junction surface by a method wherein an electric field is applied in order from the side of the center of a cathode constituted of concentrical circle-shaped numerous annular electrodes and an anode is bonded to an insulating material while the junction interface between the anode and the insulating material is moved toward the outside from its center. CONSTITUTION:The whole is heated at 300-400 deg.C or thereabouts and a switch 6a is turned ON to make a current flow through an annular electrode 5a nearest the side of the center of a cathode 5 among numerous annular electrodes 5a-5e of the cathode 5. As a result, a DC voltage is applied to the part only of the center of an insulating material 1, a polarization phenomenon that such cations as Li<+>, Na<+> and K<+> ions turn to the side of the cathode 5 and such anions as O<2-> ions turn to the side of an anode is generated in the interior of the insulating material 1 in this part, the O<2-> ions couple chemically with Si<+> ions, for example, in the anode 2 and the anode 2 is bonded to the central part of the material 1. Then, a switch 6b is turned ON to apply a DC voltage to the second annular electrode and the bonding of the anode is performed. In such a way, the joining of the anode is performed while the junction interface between the anode and the insulating material is moved in order toward the outside.
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