ALUMINUM-BASED METAL-RESIN COMPOSITE STRUCTURE, ALUMINUM-BASED METAL MEMBER, METHOD FOR MANUFACTURING ALUMINUM-BASED METAL MEMBER, AND METHOD FOR MANUFACTURING ALUMINUM-BASED METAL-RESIN COMPOSITE STRUCTURE

摘要

An aluminum-based metal-resin composite structure (106) includes an aluminum-based metal member (103) in which a dendritic layer (103-2) is formed on at least a part of a surface, and a resin member (105) bonded to the aluminum-based metal member (103) via the dendritic layer (103-2) and formed of a thermoplastic resin composition, in which, when analysis is conducted with a Fourier transform infrared spectrophotometer (FTIR) on a surface (104) of a bonding portion with at least the resin member (105) in the aluminum-based metal member (103) and an absorbance of an absorption peak observed at 3400 cm−1 is defined as A1 and an absorbance at 3400 cm−1 of a straight line connecting an absorbance at 3800 cm−1 and an absorbance at 2500 cm−1 is defined as A0, an absorbance difference (A1−A0) is in a range of 0.03 or less.