Surface-treated metal material and aqueous metal surface treatment agent

Abstract

A surface-treated metal material according to the present invention is a metal material the surface of which is coated with a composite film comprising an organic silicon compound (W) having cyclic siloxane bonds, at least one type of metal compound (X) selected from the group consisting of titanium compounds and zirconium compounds, a phosphoric acid compound (Y), and a fluorine compound (Z). In each component of the composite film, the ratio (XS / WS) of the solid content weight (WS) of Si derived from the organic silicon compound (W) and the solid content weight (XS) of the at least one metal component selected from the group consisting of Ti and Zr contained in the metal compound (X) is between 0.06 and 0.16, the ratio (YS / WS) of the solid content weight (WS) and the solid content weight (YS) of P derived from the fluorine compound (Z) is between 0.15 and 0.31, and the ratio (ZS / WS) of the solid content weight (WS) and the solid content weight (ZS) of F derived from the fluorine compound (Z) is between 0.08 and 0.50.

Description

technical field [0001] The present invention relates to a chromium-free surface-treated metal material excellent in corrosion resistance, heat resistance, fingerprint resistance, electrical conductivity, coating workability, and black deposit resistance during processing, and the surface Aqueous metal surface treatment agent used in treatment. More specifically, the present invention relates to a metal material that can maintain excellent corrosion resistance without being affected by alkali degreasing, bending processing, and punching processing when processing a surface-treated metal material into a molded product. A chrome-free surface-treated metal material that is excellent in heat resistance, fingerprint resistance, electrical conductivity, coating workability, and blackening resistance during processing, and an aqueous metal surface treatment agent used for the surface treatment. [0002] This application claims priority based on Japanese Patent Application No. 2011-10...

AI Technical Summary

Problems solved by technology

This technology is an excellent technology that has been put into practical use as a surface-treated steel sheet with a chrome-free surface treatment that is excellent in corrosion resistance, heat resistance, fingerprint resistance, electrical conductivity, painting workability, and blackening resistance during processing. , but surface-treated steel sheets with higher performance composite coatings are also required

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