Steel sheet including a multilayer coating and methods
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United States of America Patent
Stats
-
Jun 6, 2017
Issued Date -
N/A
app pub date -
Dec 17, 2010
filing date -
Dec 17, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A steel sheet is provided. The steel sheet includes a multilayer coating including at least one zinc-based layer being 0.1% to 20% magnesium by weight which is covered by a fine temporary protective layer of 5 to 100 nm. The fine temporary protective layer is composed of metal or metal oxide selected from the group consisting of aluminum, chromium, aluminum oxides AlOx, with x being strictly between 0.01 and 1.5 and chromium oxides CrOy, with y being strictly between 0.01 and 1.5. The at least one zinc-based layer is not alloyed with the temporary protective layer. Manufacturing methods for a sheet and part are also provided.
First Claim
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Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- C23C Class
- 27.20 % this patent is cited more than
- 8 Age
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