▎ 摘　　要

NOVELTY - Aluminum alloy materials is using micro-arc oxidation surface treatment technology to prepare corrosion-resistant surfaces. The pretreated graphene-doped aluminum alloy substrate is coated with a carbon nanotube film, and the surface is treated by micro-arc oxidation to obtain a corrosion-resistant surface of the carbon nanotube/ceramic layer. The composition of the aluminum alloy base material includes 5.12 wt.% silicon (Si), 3.24 wt.% zinc (Zn), 2.25 wt.% magnesium (Mg), 0.51 wt.% iron (Fe) and balance is aluminum (Al). The thickness of the carbon nanotube film is 0.1-0.2 micrometers. USE - Aluminum alloy materials for automotive structural parts. ADVANTAGE - The aluminum alloy materials solve the problem that directly dispersing the carbon nanotubes in the electrolyte leads to the agglomeration and uneven dispersion of the carbon nanotubes, so that the corrosion resistance effect of the corrosion-resistant layer is also uneven, and carbon nanotubes can block the micropores produced in the micro-arc oxidation process to a certain extent, and improving the hardness, corrosion resistance and wear resistance of the micro-arc oxidation layer. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of high-strength corrosion-resistant automotive structural parts aluminum alloy material, which involves melting the aluminum alloy substrate, adding graphene, stirring uniformly, cooling and solidifying to obtain an aluminum alloy plate, using an aluminum alloy plate as a receiving plate, using electrospinning to coat the surface with a carbon nanotube film, then drying, and putting into the electrolytic tank for micro-arc oxidation treatment for 3.5 hours, the electrolytic tank also serves as an electrode, and obtaining the high-strength and corrosion-resistant aluminum alloy material for automotive structural parts.