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Zn—Mg alloy plated steel sheet, and method for manufacturing same
US9744743B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9744743-B2 |
| Application number | US-201214758222-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 28, 2012 |
| Priority date | Dec 26, 2012 |
| Publication date | Aug 29, 2017 |
| Grant date | Aug 29, 2017 |
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- Title
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Abstract
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Provided are a Zn—Mg alloy plated steel sheet and a method for manufacturing same. The Zn—Mg alloy plated steel sheet comprises a base steel sheet and a Zn—Mg plating layer formed on the base steel sheet, wherein the content of Mg in the Zn—Mg plating layer is 8 weight % or less (provided that 0 weight % is excluded), and the Zn—Mg plating layer is a compound phase of Zn and Mg2Zn11. According to the present invention, provided are a Zn—Mg alloy plated steel sheet and a method for manufacturing the same, wherein the Zn—Mg alloy plated steel sheet has excellent corrosion resistance, high adhesion, and superior surface quality of metallic luster.
First claim
Opening claim text (preview).
The invention claimed is: 1. A zinc (Zn)-magnesium (Mg) alloy-plated steel sheet, comprising: a base steel sheet; and a Zn—Mg plating layer formed on the base steel sheet, wherein an Mg content of the Zn—Mg plating layer is 8 wt % or less and higher than 0 wt %, the Zn—Mg plating layer is a complex phase of Zn and Mg 2 Zn 11 , and an average size of surface grains of the Zn—Mg alloy-plated steel sheet is 90 μm or less and higher than 0 μm. 2. The zinc (Zn)-magnesium (Mg) alloy-plated steel sheet of claim 1 , wherein a phase ratio of Zn to Mg 2 Zn 11 is 1:1 to 1:3 in the complex phase. 3. The zinc (Zn)-magnesium (Mg) alloy-plated steel sheet of claim 1 , wherein a thickness of the Zn—Mg plating layer is 1 μm to 3 μm. 4. The zinc (Zn)-magnesium (Mg) alloy-plated steel sheet of claim 1 , wherein the base steel sheet is a cold-rolled steel sheet or a hot-rolled steel sheet. 5. The zinc (Zn)-magnesium (Mg) alloy-plated steel sheet of claim 1 , wherein an Mg content of the Zn—Mg plating layer is 6.3 wt % or less (but above 0 wt %).
Assignees
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Classifications
by resistance or inductive heating of the source · CPC title
Sputtering · CPC title
for coating elongated substrates · CPC title
Alloys based on zinc · CPC title
Next to Fe-base component [e.g., galvanized] · CPC title
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- What does patent US9744743B2 cover?
- Provided are a Zn—Mg alloy plated steel sheet and a method for manufacturing same. The Zn—Mg alloy plated steel sheet comprises a base steel sheet and a Zn—Mg plating layer formed on the base steel sheet, wherein the content of Mg in the Zn—Mg plating layer is 8 weight % or less (provided that 0 weight % is excluded), and the Zn—Mg plating layer is a compound phase of Zn and Mg2Zn11. According …
- Who is the assignee on this patent?
- Posco
- What technology area does this patent fall under?
- Primary CPC classification B32B15/013. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 29 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).