The invention discloses an efficient anticorrosion
zinc-type phosphating solution and a preparation method thereof. The
zinc-type phosphating solution comprises the
raw material formula components of,by weight, 1-15 parts of Zn<2+>, 10-40 parts of PO4<3->, 0.01-1 part of oxidized
graphene, 1-15 parts of a GO dispersing agent, 1-15 parts of a stabilizer, 5-15 parts of a pH modifier and 1000 partsof water. According to the prepared phosphating
electrolyte, the safe and non-toxic effects are achieved, a phosphating film can be quickly and efficiently prepared, and especially when a
metal workpiece serves as a
cathode in the phosphating solution for electrolytic phosphating, the workpiece can have a
smooth surface and multiple excellent properties such as scratch resistance and
aging resistance. The oxidized
graphene can be evenly distributed in a
coating of the phosphating film, micro-holes in the surface of a
phosphate film are effectively filled with the oxidized
graphene, thus an
isolation layer is formed, the physical
shielding effect is achieved, a way through which a corrosive medium directly makes contact with the
metal workpiece is blocked, occurrence of
electrochemical corrosion is further inhibited, and the
corrosion rate is decreased to a large extent.