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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.:

US 11827984 B1

PDFFull Text
Date of Patent:
Nov. 28, 2023

Filed:

Sep. 29, 2021

Coated steel product

Applicant:

Nippon Steel Corporation, Tokyo, JP;

Inventors:

Mamoru Saito, Tokyo, JP;

Yasuto Goto, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

SOLARIS Intellectual Property Group, PLLC

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
C23C 2/06 (2006.01); C23C 2/28 (2006.01); C22C 18/04 (2006.01); B32B 15/01 (2006.01); C23C 28/02 (2006.01); B32B 15/18 (2006.01); C23C 28/00 (2006.01); C23C 2/12 (2006.01); B32B 15/04 (2006.01); C23C 2/40 (2006.01); C23C 30/00 (2006.01); C22C 18/00 (2006.01);
U.S. Cl.
CPC ...
C23C 2/06 (2013.01); B32B 15/01 (2013.01); B32B 15/012 (2013.01); B32B 15/013 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/18 (2013.01); C22C 18/00 (2013.01); C22C 18/04 (2013.01); C23C 2/12 (2013.01); C23C 2/28 (2013.01); C23C 2/29 (2022.08); C23C 2/40 (2013.01); C23C 28/023 (2013.01); C23C 28/025 (2013.01); C23C 28/3225 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); Y10T 428/12757 (2015.01); Y10T 428/12792 (2015.01); Y10T 428/12799 (2015.01); Y10T 428/12951 (2015.01); Y10T 428/12958 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12993 (2015.01);
Abstract

A coated steel product including a base steel, and a coating layer containing a Zn—Al—Mg alloy layer disposed on a surface of the base steel, in which the coating layer has a predetermined chemical composition, the coated steel product including dendrite-shaped MgZnphase having a surface roughness Sa of 50 nm or less on a surface of the Zn—Al—Mg alloy layer, an area ratio of the dendrite-shaped MgZnphase having a surface roughness Sa of 50 nm or less being from 30% to 80% within a region of an observable field of view of 5 mm, and among the dendrite-shaped MgZnphase having a surface roughness Sa of 50 nm or less, a number of dendrite-shaped MgZnphase having an area ofmmor more being from 5 to 100 within a region of an observable field of view of 25 mm.

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