▎ 摘　　要

NOVELTY - Preparing zinc-nickel alloy plating structure comprises (i) degreasing, descaling and performing pre-activation treatment of metal substrate, (ii) preparing zinc-nickel alloy coating on the surface of metal substrate, (iii) preparing trivalent chromium passivation layer on zinc-nickel alloy plating layer, and (iv) preparing hydroxy graphene modified sealing layer on trivalent chromium passivation layer, where metal substrate is steel substrate, zinc alloy substrate, copper alloy substrate, or aluminum alloy substrate; hydroxy graphene modified sealing layer is prepared by hydroxy graphene modified sealing agent, and composition of hydroxygraphene modified blocking agent comprises 30-40 pts. wt. silica sol, 15-25 pts. wt. water-soluble silane polymer PU 113, 4-12 pts. wt. nano-sized graphene oxide solution, 0.4-0.6 pts. wt. TANAFOAMS (RTM: Fatty alcohol polyglycol ether) silicone defoamer, 0.8-1.5 pts. wt. LA13-863 silicone leveling agent and 30-50 pts. wt deionized water. USE - The plating structure is useful in strong corrosive environments (claimed). ADVANTAGE - The plating structure improves corrosion resistance and wear resistance.