| 摘要 |
A composite of a magnesium part or a magnesium alloy part and a resin composition, improved to have high corrosion resistance, is manufactured by: a step of shaping a magnesium alloy part 1 from a casting or an intermediate material; a step of immersing and chemically etching the shaped part in an acidic aqueous solution; a step of immersing the chemically etched shaped part in an aqueous solution containing potassium permanganate and forming on the surface thereof a thin layer having manganese oxide as a component; a step of inserting the part, on which the thin layer has been formed, into a metallic mold for injection molding and injecting into the mold a resin composition selected out of a resin composition whose main component is polyphenylene sulfide, a resin composition whose main component is a polybutylene terephthalate resin and a resin composition whose main component is an aromatic polyamide resin and then integrally affixing the magnesium alloy part 1 and the resin composition 4; and a step of subjecting the integrally affixed composite 7 to a chemical conversion treatment by immersing it again in a magnesium alloy chemical conversion treatment solution.
|
