Zn-Mg electroplated metal sheet and fabrication process therefor
AssigneeKobe Steel, Ltd.
InventorsKuniyasu Araga, Hiroo Shige, Masatoshi Iwai, Takeshi Watase, Yutaka Kitou
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Abstract
Provided are a Zn—Mg electroplated metal sheet excellent in corrosion resistance, formability and productivity, and a fabrication process therefor. The Zn—Mg electroplated metal sheet comprises a Zn—Mg electroplated layer including Mg and Zn, the Zn being a main component, formed on at least one surface of a metal substrate material. The Zn—Mg electroplated layer shows more excellent corrosion resistance by including a C component therein. The Zn—Mg electroplated metal sheet can be fabricated by performing electroplating with an acidic aqueous solution including metal salts of Zn and Mg, and in addition, a surface active agent.
Claims20
A Zn—Mg electroplated metal substrate comprising:
- a metal substrate, and
- a C component-containing Zn—Mg electroplated layer comprising C, Mg and Zn,
- wherein Zn is a main component, formed on at least one surface of said metal substrate,
- wherein said metal substrate is electroplated in an acidic aqueous solution comprising at least one metal salt of Zn and at least one metal salt of Mg and one or more surface active agents which comprise at least one of a cationic surface active agent and a nonionic surface active agent, and said C component is an organic compound produced from said one or more surface active agents, and wherein the Mg content in the Zn—Mg electroplated layer is in the range of from 1 to 40 wt %.
Dependencies are inferred from the claim text.