Patent ID: 9209044
Filing Date: 2015-12-08
Classification: C22F,C23C,H01L,Y10T

Abstract:
1. A metal-resin composite comprising: a metallic member including a metal with a high melting point of 500° C. or more; a resin member integrated with the metallic member; and an alloy layer containing a metal with a low melting point less than 500° C. between the metallic member and the resin member, wherein, average surface roughness of the alloy layer is in the range from 5 nm or more to less than 1 μm at an interface between the alloy layer and the resin member, a period of unevenness formed on the interface of the alloy layer is in the range from 5 nm or more to less than 1 μm, at least a part of the shapes of the unevenness comprise overhang shapes formed by heating at temperatures just below the melting point of the metal having a low melting point, an amount of the metal with a low melting point included at an interface side of the resin member is larger than an amount of the metal with a low melting point included at an interface side of the metallic member, when the alloy layer is halved in a parallel direction of the interface, a concentration of the metal with a low melting point in the alloy layer gradually decreases from the interface side of the resin member to the interface side of the metallic member, and wherein the metal with the high melting point is nickel and the metal with the low melting point is zinc.