Method of preparing aluminum alloy resin composite and aluminum alloy-resin composite obtainable by the same

A method of preparing an aluminum alloy-resin composite, comprising the steps of:

• S1:
• anodizing a surface of an aluminum alloy substrate to form an oxide layer on the surface, wherein the oxide layer is formed with nanopores;
• S2:
• immersing the resulting aluminum alloy substrate obtained at step S1 in an alkaline solution having a pH of about 10 to about 13, to form corrosion pores on an outer surface of the oxide layer, wherein the corrosion pores have a larger diameter than the nanopores, the corrosion pores and the nanopores form a double-layer pore structure, and the corrosion pores are in communication with the nanopores, wherein the alkaline solution includes an aqueous solution comprising at least one selected from a soluble carbonates, a soluble alkali, a soluble phosphate, a soluble sulfate, and a soluble borate;
• and
• S3:
• injection molding a resin onto the surface of the resulting aluminum alloy substrate obtained at step S2 in a mold to obtain the aluminum alloy-resin composite.