▎ 摘　　要

NOVELTY - The utility model claims a high corrosion resistance zinc-cobalt alloy plating structure of aluminium alloy piece, comprising an aluminium alloy substrate, and the aluminium alloy substrate from inside to outside in turn prepared chemical deposition zinc layer, HEDP copper plating layer, zinc-cobalt alloy plating layer, trivalent chromium passivation layer and hydroxyl graphene sealing layer. The plating piece according to GB/T 10125-2012 " artificial atmosphere corrosion test salt fog test " for neutral salt fog test 480h without white corrosion, plating layer has good corrosion resistance.