The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 2022
Filed:
Sep. 14, 2018
Applicant:
Arcelormittal, Luxembourg, LU;
Inventors:
Assignee:
ArcelorMittal, Luxembourg, LU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 22/53 (2006.01); C23C 22/82 (2006.01); C23C 28/00 (2006.01); C23C 2/06 (2006.01); C23C 2/40 (2006.01); C23C 22/68 (2006.01);
U.S. Cl.
CPC ...
C23C 28/321 (2013.01); C23C 2/06 (2013.01); C23C 2/40 (2013.01); C23C 22/53 (2013.01); C23C 22/68 (2013.01); C23C 22/82 (2013.01); C23C 28/3225 (2013.01); C23C 28/34 (2013.01);
Abstract
A steel substrate is provided, coated on at least one of its faces with a metallic coating based on zinc or its alloys wherein the metallic coating is itself coated with a zincsulphate-based layer including at least one of the compounds selected from among zincsulphate monohydrate, zincsulphate tetrahydrate and zincsulphate heptahydrate, wherein the zincsulphate-based layer has neither zinc hydroxysulphate nor free water molecules nor free hydroxyl groups, the surface density of sulphur in the zincsulphate-based layer being greater than or equal to 0.5 mg/m. A corresponding treatment method is also provided.