Galvannealed steel sheet coated with an iron and nickel layer topped by a zinc-based layer
US12091724B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jan 9, 2023 |
| Grant date | Sep 17, 2024 |
| Priority date | — |
| Expiry date | Jan 9, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/009
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Galvannealed steel sheet having a steel substrate coated with a first alloy layer with iron and nickel directly topped by a second alloy layer based on zinc, the first and second alloyed layers being alloyed through diffusion such that the second alloy layer includes from 5 to 15 wt. % of iron, from 0 to 15 wt. % of nickel, a balance being zinc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.