JOINT STRUCTURE OF ALUMINUM MEMBER AND COPPER MEMBER

摘要

PROBLEM TO BE SOLVED: To provide a joint structure of an aluminum member and a copper member in which an aluminum member made of aluminum or an aluminum alloy and a copper member made of copper or a copper alloy are relatively easily and surely joined with each other, and which has sufficient joint reliability to be applied to an electronic/electrical component, a heat radiation component and the like.SOLUTION: An aluminum member 11 made of aluminum or an aluminum alloy and a copper member 12 made of copper or a copper alloy are joined with each other by solid phase diffusion bonding. A joint interface between the aluminum member 11 and the copper member 12 is formed with an intermetallic compound layer 21 comprising Cu and Al. Oxides 27 are dispersed in a layered state along an interface between the copper member 12 and the intermetallic compound layer 21.