| 摘要 |
PURPOSE:To form a joint part having high quality without intervention of a brittle intermetallic compd. by sputtering the surface of the joint part in a non-oxidative atmosphere then coating a material which is more hardly oxidized than Al and Ti and produces eutectic crystal with Al on the surface thereof. CONSTITUTION:Either one of Al or Al alloy material and Ti or Ti alloy material charged into a sample exchange chamber 2 is carried into a cleaning and surface treating chamber 1 where the surface is sputtered by an Ar ion beam and is then coated. The material is then returned to the chamber 2 and the other material is similarly treated in the chamber 1. The material is again returned to the chamber 2 and the joint surfaces of both materials are brought into tight contact with each other. The materials are then carried into a diffusion chamber 3 where the materials are joined. The coating in this case is formed on the surfaces in order to maintain the clean surfaces removed of oxide until joining and to permit easy joining. Ni, Cu, Si, etc. are used for coating. These coating materials melt by generating eutectic crystal with Al and are extruded in the stage of joining.
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