Hot-dip aluminum alloy plated steel having excellent shear cut edge corrosion resistance and processed part corrosion resistance, and method of manufacturing the same
US9187814B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | May 31, 2011 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Dec 30, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12979
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The hot-dip aluminum alloy plated steel has a base steel and a plated layer, in which the composition of the plated layer contains, by % by mass, Fe: 25% to 75%, Mg: 2% to 20%, and Ca: 0.02% to 2% with a remainder of Al and inevitable impurities, the plated layer contains one or both of an α-Mg phase and an Al3Mg2 phase, and the sum of the partial volume fraction of the α-Mg phase and the partial volume fraction of the Al3Mg2 phase in a range of a depth of 5 μm from a surface of the plated layer is 1% to 40%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.