LASER JOINING METHOD

摘要

PURPOSE:To easily join a metal and ceramics without sublimating and decomposing the ceramics by interposing a brazing filler metal between the metal and the ceramics and irradiating a laser beam thereto from the metal side. CONSTITUTION:The laser beam L is irradiated from the metal 1 side to the metal 1 and the ceramics 2 while the brazing filler metal 5 is held in place between said metal and ceramics. The laser beam L is irradiated to the surface of the metal 1 by a condenser lens 6. The metal 1 is heated up by the laser beam L. The brazing filler metal 5 is heated and metaled via the metal 1 when the laser beam L is irradiated to the metal 1 for the prescribed time. The metal 1 and the ceramics 2 are joined by the melting of the brazing filler metal 5. The laser beam L is irradiated to the surface of the metal 1 and is not directly irradiated to the ceramics 2 and therefore the generation of a keyhole, etc. and the sublimation and decomposition of the ceramics are prevented. The metal and the ceramics are thus joined with the high joint strength.