| abstract |
An aqueous alkaline coating solution having a pH of no greater than about 10.2 for forming on zinc surface a coating which is corrosion resistant and to which overlying coatings adhere excellently is disclosed, and containing in solution one or more of the following metals: cobalt, nickel, iron and tin; and an inorganic complexing material which is effective in maintaining the metal in solution; and optionally, a reducing agent. |