The invention provides a
zinc-based multi-element
alloy for hot dipping and a preparation method thereof. The
zinc-based multi-element
alloy comprises the following components in percentage by
mass: 2 to 3 percent of Al, 0.1 to 0.2 percent of RE(LA, Ce and PR mixed
rare earth), 0.02 to 0.03 percent of Ni, 0.01 to 0.02 percent of Si, 0.01 to 0.02 percent of Mg, 0.005 to 0.01 percent of Cu and the balance of Zn. The
zinc-based multi-element
alloy has the advantages that: (1) in the alloy, the Al, Ni, Si, Cu and other elements are reasonably mixed, so the
corrosion resistance of a hot-
dip coating is obviously improved by over 20 percent than that of a pure zinc
coating, meanwhile, the
aluminium content is controlled within 3 percent so as to ensure that the alloy has good dip plating performance; and (2) in the alloy, La, Ce, Pr and other rare-earth elements and
Mg element are reasonably mixed, so the fluidity and
wetting performance of alloy plating solution are further improved, the surface quality of the
coating is good, and the
metal consumption is reduced by over 20 percent than that of the traditional
galvanization. The zinc-based multi-element alloy and the preparation method thereof have obvious advantages in the aspects such as improving
performance quality of hot-dip galvanized products, reducing
metal consumption and reducing production cost.