METHOD FOR MANUFACTURING JOINED BODY, METHOD FOR MANUFACTURING HEAT SINK-EQUIPPED POWER MODULE SUBSTRATE, METHOD FOR MANUFACTURING HEAT SINK, JOINED BODY, HEAT SINK-EQUIPPED POWER MODULE SUBSTRATE, AND HEAT SINK

摘要

PROBLEM TO BE SOLVED: To provide a joining method for a joined body, by which a joined body arranged by appropriately joining an aluminum alloy member including an aluminum alloy relatively low in solidus temperature, and a metal member including copper, nickel or silver to each other, and having a low heat resistance in a laminating direction can be manufactured.SOLUTION: A method for manufacturing a joined body arranged by joining a metal member including copper, nickel or silver, and an aluminum alloy member including an aluminum alloy of which the solidus temperature is under an eutectic temperature of aluminum and the metal element included in the metal member to each other comprises: an aluminum alloy member/aluminum interposing layer solid-phase diffusion-joining step S05 where an aluminum interposing layer made of aluminum with a purity of 99 mass% or higher is disposed between the aluminum alloy member and the metal member, and the aluminum alloy member and the aluminum interposing layer are joined to each other by solid-phase diffusion; and an aluminum interposing layer/metal member solid-phase diffusion joining step S04 where the aluminum interposing layer and the metal member are joined to each other by solid-phase diffusion.SELECTED DRAWING: Figure 2