| 摘要 |
PROBLEM TO BE SOLVED: To readily and inexpensively carry out sufficiently high conjugation between a ceramic substrate in a state burned and a metal plate by bringing the ceramic substrate into contact with the metal plate through a brazing material or without disposing the brazing material and applying pressure in the vertical direction to the ceramic substrate. SOLUTION: When a ceramic substrate is brought into contact with a metal plate through a brazing material or without disposing the brazing material and both members are joined by heating under high temperature, the conjugation is carried out by applying 8-100 kg/cm2 pressure in the vertical direction to the ceramic substrate in joining. A ceramic substrate in usual level can directly be used without requiring especially severe smoothness and flatness to the ceramic substrate to improve productivity of the conjugate by applying extremely high pressure to the ceramic substrate. Al or Al alloy capable of sufficiently softening at 500-640 deg.C brazing temperature and readily forming a shape following unevenness of the ceramic substrate is preferable as the metal plate material and the metal plate may be of a single layer or a laminate of two or three or more materials such as Al-Ni or Al-Ni-Cu.
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