Abstract: Provided is a coated aluminum material for joining having an adhesion layer on a surface, and can exert excellent adhesion strength and corrosion resistance performance even under severe use conditions while being chromium-free. Provided is a coated aluminum material capable of producing the coated aluminum material for joining, and an aluminum resin composite material using the coated aluminum material for joining. Disclosed are a coated aluminum material for joining having an adhesion layer on a surface thereof and including a coated aluminum material and a silica-containing film formed on a surface of the aluminum material, the silica-containing film including 0.5 to 35 mass % of a silane coupling agent and having Si and P contents of 2 to 60, and 0.1 to 6.0 mg/m2, respectively, and P/Si mass ratio of P content and Si content of 0.02 to 0.

Abstract: A metal resin composite molded body wherein various metal bases and a resin molded body are integrally and firmly bonded with each other; and a versatile method for producing this metal resin composite molded body are provided. Particularly provided are: a metal resin composite molded body wherein an aluminum base and a polyolefin resin molded body are integrally and firmly bonded with each other; and a simple method for producing this metal resin composite molded body. A metal resin composite molded body comprises a metal base, a polypropylene resin layer and a thermoplastic resin molded body. The polypropylene resin layer is bonded to the metal base with a hydrophilic surface being interposed therebetween. The hydrophilic surface is formed on the metal base. The thermoplastic resin molded body is bonded to the polypropylene resin layer by means of anchoring effect and compatibilizing effect with the polypropylene resin layer.