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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 10968506 B1

PDFFull Text
Date of Patent:
Apr. 06, 2021

Filed:

Dec. 23, 2016

High-manganese hot-dip aluminum-coated steel sheet having excellent coating adhesion

Applicant:

Posco, Pohang-si, KR;

Inventors:

Heung-Yun Kim, Gwangyang-si, KR;

Hyeon-Seok Hwang, Gwangyang-si, KR;

Young-Ha Kim, Gwangyang-si, KR;

Assignee:

POSCO, Pohang-si, KR;

Attorney:

Cantor Colburn LLP

Primary Examiner:

Daniel J Schleis

Int. Cl.
CPC ...
C23C 2/12 (2006.01); C23C 2/40 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/00 (2006.01); C22C 38/38 (2006.01); C23C 2/28 (2006.01); C22C 38/14 (2006.01); C22C 38/12 (2006.01); B32B 15/01 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01);
U.S. Cl.
CPC ...
C23C 2/12 (2013.01); B32B 15/012 (2013.01); C22C 38/002 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/38 (2013.01); C23C 2/28 (2013.01); C23C 2/40 (2013.01); Y10T 428/12757 (2015.01);
Abstract

Provided is a high-manganese hot-dip aluminum-coated steel sheet comprising: a base steel sheet containing, by weight, 5% to 35% of Mn, 0.3 to 6% of Al, 0.1 to 1.2% of Si, the balanced amount of Fe, and inevitable impurities; a hot-dip aluminum-coated layer, formed on a surface of the base steel sheet, containing, by weight, 3 to 12% of Si and the balanced amount of Al, and inevitable impurities; and an alloy layer, 0.1 to 10 μm in thickness with a Fe—Al—Si—Mn-based alloy phase on an interface between the base steel sheet and the hot-dip aluminum-coated layer, containing, by weight, 40 to 70% of Al, 2 to 13% of Si, 3 to 9% of Mn, the balance amount of Fe, and inevitable impurities.

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