Method for making magnesium/magnesium alloy-and-resin composite and magnesium/magnesium alloy-and-resin composite thereof

A method for making a magnesium/magnesium alloy-and-resin composite, comprising:

• providing a magnesium/magnesium alloy substrate;
• chemically etching the substrate using sodium carbonate water solution and citrate hydrate water solution respectively to rough a surface of the substrate and form a plurality of recesses in the surface;
• electrochemically treating the substrate using a water solution containing sodium silicate, potassium hydroxide, and citric acid to form a plurality of pores in the surface, the pores having a diameter having a range of about 70 nm-400 nm and a depth having a range of about 60 nm-800 nm;
• and
• inserting the substrate in a mold and molding crystalline thermoplastic synthetic resin on the surface of the substrate to form the composite.