| 摘要 |
The present invention relates to a treatment solution for the deposition of a thin organic/inorganic hybrid coating on a zinciferous metal surface, c omprising water and (i) a concentration of phosphoric acid (A); (ii) a conce ntration of dissolved inorganic components (B) containing at least one compl ex fluoro metallate anion selected from the group of titanium, zirconium, ha fnium and/or silicium, preferably hexafluorotitanic acid; (iii) a concentrat ion of dissolved inorganic components (C) consisting of bivalent cations of zinc (C1) and/or manganese (C2); (iv) a concentration of a dissolved inorgan ic component (D) consisting of oxoanions of molybdenum; (v) a concentration of a water soluble and/or water dispersable polymeric compound (E) which is based on a chelating poly(vinylphenol) compound; (vi) a concentration of a w ater-soluble and/or water-dispersable polymeric resin (F) being not part of or identical with component (E). The thin organic/inorganic hybrid coating o n the zinciferous metal surface is deposited according to this invention wit h a film weight of at least about 0.4 g/m2 and not more than about 1.6 g/m2 imparting to the coated material a temporary corrosion protection and excell ent lack adhesion to further applied organic coatings. Additionally, the inv ention relates to the use of a zinciferous metal substrate coated with an or ganic/inorganic hybrid coating that provides a surface resistance of said co ated substrate that is not more than 1.5 m.OMEGA. and preferably not more th an 1 m.OMEGA. in industrial assembling and forming routines and for applying a multi-layer coating to said substrate in industrial metal surface finishi ng such as coil coating, car body painting lines, white goods and electronic housing production. |
