Aluminum resin bonded body and method for producing same

An aluminum-resin bonded body, comprising:

• an aluminum substrate formed of aluminum or an aluminum alloy;
• an oxygen-containing film containing oxygen, the oxygen-containing film being formed on a surface of the aluminum substrate;
• and
• a resin molded body formed of a thermoplastic resin composition containing a thermoplastic resin and an additive, the resin molded body being bonded onto the oxygen-containing film,
• wherein the oxygen-containing film formed on the surface has an oxygen content measured with an EPMA within a range of from 0.1 wt % or more to 20 wt % or less,
• wherein the thermoplastic resin in the thermoplastic resin composition comprises any one kind or two or more kinds of resins selected from the group consisting of a polyphenylene sulfide-based resin, a polyether-based resin, a polyphenylene ether-based resin, a sulfone-based resin, and a polyphenylene oxide-based resin,
• wherein the additive in the thermoplastic resin composition is a carbonyl compound having a carbonyl group,
• wherein the resin molded body has a carbonyl group (C═O) as resulted from the additive, and
• wherein the oxygen-containing film comprises any one kind or two or more kinds of aluminum compound-containing films selected from:
• a film containing any one kind or two or more kinds of aluminum compounds selected from the group consisting of Al(OH)3, AlO(OH), Al(PO4), Al2(HPO4)3, and Al(H2PO4)3 derived from an aluminum film-forming treatment;
• a film containing a hydrogen bond between a hydroxy group on the aluminum substrate and a silanol group derived from the aluminum film-forming treatment;
• and a film containing an Al—O—Si bond derived from the aluminum film-forming treatment.