▎ 摘　　要

NOVELTY - Preparing multilayer graphene on the surface of aluminum alloy titanium alloy involves preparing a large-area complete graphene by a chemical vapor deposition method on copper foil substrate, where number of graphene layers is single or double, and ompletely covering the graphene on surface of copper foil. The graphene is transferred to porous copper foil layer by layer by polymethyl methacrylate (PMMA)-assisted transfer method until required number of layers. The multilayer graphene/porous copper foil composite structure is annealed and repa ired in a plasma atmosphere of methane (CH4) and hydrogen (H2). The polished and degreased aluminum alloy titanium alloy surface is dip-coated with certain concentration of a silane coupling agent, and multi-layer graphene is transferred to aluminum alloy surface at one time. The good combination of high-quality multi-layer graphene and the surface of aluminum alloy titanium alloy fully exerts barrier function of graphene's protective isolation. USE - Method for preparing multilayer graphene on the surface of aluminum alloy titanium alloy. ADVANTAGE - The method makes up for the problem of defect breakage caused by multiple transfers and helps graphene to exert its excellent physical isolation characteristics. In the preparation method, the obtained multilayer graphene / porous copper foil composite structure is subjected to repair annealing that significantly improves the quality and structural integrity of multi-layer graphene, which results in ensuring its isolation and protection performance. The multilayer graphene prepared by the method has a complete structure and high quality, and is suitable for being used as an efficient anticorrosive coating on a metal surface.