Surface-treated metal material and an aqueous metal surface treatment agent
2012
At least one metal compound surface-treated metal material of the present invention has a composite coated metal material surface, said composite coating comprising an organic silicon compound (W) having a cyclic siloxane bond, selected from titanium compounds and zirconium compounds (X), phosphate compound (Y) and fluorine compounds (Z). The respective components of the composite coating, the mass of the solid content of the organic silicon compound Si (W) Ws of the source metal compound (X) at least one metal selected from Ti and Zr contained in the Xs Xs mass ratio of the solid component / Ws is 0.06 to 0.16, a solid content mass ratio of Ys Ys source of the P solid mass Ws of the phosphate compound (Y) / Ws 0.15 to 0.31, the Zs Zs mass ratio of the solid content mass F Ws and (Z) derived from the fluorine compound the solid / Ws 0.08 to 0.50.
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