Method for producing an anti-corrosion coating for hardenable sheet steels and an anti-corrosion coating for hardenable sheet steels
US-2017321314-A1 · Nov 9, 2017 · US
Steel component comprising an anti-corrosion layer containing manganese
US12043902B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12043902-B2 |
| Application number | US-202117791738-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 15, 2021 |
| Priority date | Jan 24, 2020 |
| Publication date | Jul 23, 2024 |
| Grant date | Jul 23, 2024 |
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Abstract
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The invention relates to a steel component comprising a steel substrate having an anticorrosion coating present at least on one side of the steel substrate. This anticorrosion coating comprises a manganese-containing alloy layer. The manganese-containing alloy layer here forms the closest alloy layer of the anticorrosion coating to the surface. Moreover the manganese-containing alloy layer comprises iron and a further metal.
First claim
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The invention claimed is: 1. A steel component comprising a steel substrate having an anticorrosion coating present at least on one side of the steel substrate, the anticorrosion coating comprising a manganese-containing alloy layer, wherein the manganese-containing alloy layer forms a topmost alloy layer of the anticorrosion coating and where the manganese-containing alloy layer contacts the steel substrate and comprises: more than 40 wt % manganese; aluminum and one or more alloy elements selected from the group consisting of magnesium, calcium, strontium, zirconium, zinc, silicon, chromium, and tin, wherein a total fraction of the amount of the one or more alloy elements cumulatively is less than 2 wt %; and balance iron having a content less than 24 wt % and unavoidable impurities, wherein an electrochemical potential of the manganese-containing alloy layer is more negative than an electrochemical potential of the steel substrate. 2. The steel component as claimed in claim 1 , wherein the amount of the difference between the electrochemical potentials of steel substrate and manganese-containing alloy layer is greater than 50 mV. 3. The steel component as claimed in claim 1 , wherein the amount of the difference between the electrochemical potentials of steel substrate and manganese-containing alloy layer is greater than 150 mV. 4. The steel component as claimed in claim 1 , wherein the amount of the difference between the electrochemical potentials of steel substrate and manganese-containing alloy layer is greater than 200 mV. 5. The steel component as claimed in claim 1 wherein manganese-containing alloy layer contains more than 45.2 wt % manganese. 6. The steel component as claimed in claim 5 wherein manganese-containing alloy layer contains more than 50.2 wt % manganese. 7. A flat steel product for producing, by hot forming, a steel component, the flat steel product comprising a steel substrate having an anticorrosion coating present at least on one side of the steel substrate, the anticorrosion coating comprising a manganese-containing alloy layer that forms a closest alloy layer of the anticorrosion coating to a surface of the flat steel product and where the manganese-containing alloy layer comprises: more than 45.2 wt % manganese; aluminum and one or more alloy elements selected from the group consisting of magnesium, calcium, strontium, zirconium, zinc, silicon, chromium, and tin, wherein a total fraction of the amount of aluminum and amount of the one or more alloy elements cumulatively is less than 2 wt %; and balance iron having a content less than 24 wt % and unavoidable impurities. 8. The flat steel product as claimed in claim 7 wherein manganese-containing alloy layer contains more than 50.2 wt % manganese.
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during manufacturing of plates or strips (C21D8/12 takes precedence) · CPC title
Refractory [Group IVB, VB, or VIB] metal-base component · CPC title
Next to Fe-base component · CPC title
Group IIA metal-base component · CPC title
Fe-base component · CPC title
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- What does patent US12043902B2 cover?
- The invention relates to a steel component comprising a steel substrate having an anticorrosion coating present at least on one side of the steel substrate. This anticorrosion coating comprises a manganese-containing alloy layer. The manganese-containing alloy layer here forms the closest alloy layer of the anticorrosion coating to the surface. Moreover the manganese-containing alloy layer comp…
- Who is the assignee on this patent?
- Thyssenkrupp Steel Europe Ag
- What technology area does this patent fall under?
- Primary CPC classification C23C2/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 23 2024 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).