Galvannealed steel sheet
US12378627B2 · kind B2 · utility
0Cited by
5References
18Claims
0Family size
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Key dates
| Filing date | Dec 13, 2023 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Dec 13, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C28/345
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A galvannealed steel sheet obtainable by a method including the provision of a specific steel sheet, a recrystallization annealing with specific heating, soaking and cooling sub-steps using an inert gas, a hot-dip galvanizing and an alloying treatment, wherein the zinc coating is alloyed through diffusion of the iron from the steel sheet such that the zinc coating includes from 5 to 15% by weight of Fe, oxides including FeO, Mn2SiO4 and MnO, the balance being zinc, the steel sheet including internal oxides including FeO, Mn2SiO4 and MnO in the steel sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.