| 摘要 |
A method for bonding of different metals and a joint body manufactured by the same are provided to improve the recovery efficiency of zinc by improving adhesion, thereby lowering corrosion of aluminum, further improve adhesion by increasing the area of a bonding interface, and delay corrosion rate of aluminum as much as at least 80% by additionally forming a forging layer on an outer portion of the joint body. As a method for bonding copper and aluminum, a method for bonding of different metals comprises: a copper coating step of coating cadmium on a surface of copper in a bonding interface to improve adhesion between both metals; a step of melting aluminum to be cast; and a step of inserting the coated copper into a caster, and injecting a prepared aluminum solution into the caster to cast a joint body. The method further comprises a pre-treatment step of forming a fine irregularity structure on the copper surface in the bonding interface prior to the copper coating step. The method further comprises a forging step of additionally forming a forging layer as a copper plate on an outer portion of the joint body in a way that the forging layer is formed on the entire outer portion of a copper layer and a top portion of an aluminum layer in the bonding interface after performing the casting step.
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