Hot-dip Al alloy coated steel sheet and method of producing same
US10822685B2 · kind B2 · utility
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2References
6Claims
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Key dates
| Filing date | Mar 27, 2018 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Mar 27, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12757
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
To provide a hot-dip Al alloy coated steel sheet which is excellent in post-painting corrosion resistance and post-working corrosion resistance. Disclosed is a hot-dip Al alloy coated steel sheet comprising a coating formed by a coating layer and an interfacial alloy layer present at an interface between the coating layer and a base steel sheet, in which the interfacial alloy layer contains Mn, and the coating layer contains Mg2Si having a major axis length of 5 μm or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.