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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 9982342 B1

PDFFull Text
Date of Patent:
May. 29, 2018

Filed:

Aug. 16, 2016

Zn—mg alloy-coated steel sheet with excellent blackening resistance and excellent adhesion

Applicant:

Posco, Pohang-si, Gyeongsangbuk-do, KR;

Inventors:

Dong-Yoeul Lee, Gwangyang-si, KR;

Kyung-Hoon Nam, Gwangyang-si, KR;

Yong-Hwa Jung, Gwangyang-si, KR;

Seok-Jun Hong, Gwangyang-si, KR;

Tae-Yeob Kim, Gwangyang-si, KR;

Young-Jin Kwak, Gwangyang-si, KR;

Mun-Jong Eom, Gwangyang-si, KR;

Woo-Sung Jung, Gwangyang-si, KR;

Assignee:

POSCO, Gyeongsangbuk-Do, KR;

Attorney:

Cantor Colburn LLP

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
C23C 16/453 (2006.01); C23C 14/16 (2006.01); C23C 28/00 (2006.01); C23C 16/40 (2006.01); B32B 15/01 (2006.01); C23C 28/02 (2006.01); C23C 30/00 (2006.01); C23C 14/58 (2006.01);
U.S. Cl.
CPC ...
C23C 16/453 (2013.01); B32B 15/013 (2013.01); C23C 14/16 (2013.01); C23C 14/165 (2013.01); C23C 14/58 (2013.01); C23C 14/5846 (2013.01); C23C 14/5853 (2013.01); C23C 16/40 (2013.01); C23C 16/401 (2013.01); C23C 16/402 (2013.01); C23C 16/403 (2013.01); C23C 16/404 (2013.01); C23C 28/02 (2013.01); C23C 28/021 (2013.01); C23C 28/023 (2013.01); C23C 28/321 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); Y10T 428/1259 (2015.01); Y10T 428/12583 (2015.01); Y10T 428/12611 (2015.01); Y10T 428/12618 (2015.01); Y10T 428/12792 (2015.01); Y10T 428/12799 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12979 (2015.01);
Abstract

The present invention relates to a Zn—Mg alloy-coated steel sheet with excellent blackening resistance and excellent coating adhesion and to a method for manufacturing same. Provided are a Zn—Mg alloy-coated steel sheet with excellent blackening resistance and excellent adhesion and a method for manufacturing same, the steel sheet comprising: a substrate steel sheet; a Zn—Fe intermetallic compound layer formed on the substrate steel sheet; a first Zn—Mg coating layer formed on the Zn—Fe intermetallic compound layer and comprising a Zn—Fe intermetallic compound in which the content of Zn is 95% by weight or higher; a second Zn—Mg coating layer formed on the first Zn—Mg coating layer and comprising a Zn—Mg intermetallic compound in which the content of Zn is 80 to 95% by weight; and an oxide film formed on the second Zn—Mg coating layer and comprising a metallic oxide.

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