| 摘要 |
<p>A zinc-based metal plated steel sheet coated with a composite containing an organic material, characterized in that it comprises a steel sheet and, formed thereon sequentially in the following order, a zinc based metal plating film, a zinc phosphate film containing Mg, and an organic film, wherein the zinc phosphate film has a Mg/P (wt ratio) of 0.15 or more and contains Mg in an amount of 20 mg/m2 or more. It is preferred that the zinc phosphate film contains one or more of Ni, Mn, Co, Fe, Cu, Al and Ca, and that the organic film is a composite film prepared from of an organic resin and one or more of powders and colloids of SiO¿2?, Al2O3, MgO, Fe2O3, Fe3O4, ZrO2, TiO2 and SnO2.</p> |
