LOW-ZINC HOT-DIP ALUMINUM ALLOY PLATING MATERIAL WITH SEVEN MODIFICATION COMPONENTS AND PREPARATION

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Disclosed are a low-zinc hot-dip aluminum alloy plating material with seven modification components and a preparation method thereof. The alloy coating material comprises, by weight percentage, Zn of ≤ 30, a polarization modifying agent of 10-4 to 15, an alloy strengthening agent of 10-4 to 6.0, a solvent passivation agent of 10-4 to 1.82, a precipitation hardener of 10-4 to 0.5, a crystal grain finer of 10-4 to 1.0, a rare earth additive of 10-4 to 1.0 and a substrate interface reaction buffer of 0.001 to 2.0, with the remainder being Al and inevitable trace impurities.