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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 11649542 B1

PDFFull Text
Date of Patent:
May. 16, 2023

Filed:

Nov. 18, 2021

Multi-layered zinc alloy plated steel having excellent spot weldability and corrosion resistance

Applicant:

Posco, Pohang-si, KR;

Inventors:

Young-Jin Kwak, Gwangyang-si, KR;

Goo-Hwa Kim, Pohang-si, KR;

Mun-Jong Eom, Gwangyang-si, KR;

Seok-Jun Hong, Gwangyang-si, KR;

Kyoung-Pil Ko, Gwangyang-si, KR;

Yong-Hwa Jung, Gwangyang-si, KR;

Dong-Yoeul Lee, Gwangyang-si, KR;

Tae-Yeob Kim, Gwangyang-si, KR;

Kyung-Hoon Nam, Gwangyang-si, KR;

Assignee:

POSCO CO., LTD, Pohang-si, KR;

Attorney:

Cantor Colburn LLP

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
C23C 30/00 (2006.01); C23C 28/02 (2006.01); C23C 28/00 (2006.01); C23C 14/16 (2006.01); C23C 14/24 (2006.01); C23C 14/14 (2006.01); C23C 2/28 (2006.01); C23C 2/26 (2006.01); C23C 2/00 (2006.01); C23C 2/40 (2006.01); C23C 2/04 (2006.01); C23C 2/06 (2006.01); C22C 18/00 (2006.01); C22C 23/00 (2006.01); C22C 23/04 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/60 (2006.01); B32B 15/01 (2006.01); B32B 15/04 (2006.01); B32B 15/18 (2006.01);
U.S. Cl.
CPC ...
C23C 14/16 (2013.01); B32B 15/01 (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 23/00 (2013.01); C22C 23/04 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/60 (2013.01); C23C 2/00 (2013.01); C23C 2/04 (2013.01); C23C 2/06 (2013.01); C23C 2/26 (2013.01); C23C 2/28 (2013.01); C23C 2/40 (2013.01); C23C 14/14 (2013.01); C23C 14/165 (2013.01); C23C 14/24 (2013.01); C23C 28/02 (2013.01); C23C 28/021 (2013.01); C23C 28/023 (2013.01); C23C 28/025 (2013.01); C23C 28/32 (2013.01); C23C 28/321 (2013.01); C23C 28/322 (2013.01); C23C 28/3225 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); C21D 2211/001 (2013.01); Y10T 428/12785 (2015.01); Y10T 428/12799 (2015.01); Y10T 428/12951 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12979 (2015.01);
Abstract

Provided is a multilayer zinc alloy plated steel material comprising a base steel material and multiple plating layers formed on the base steel material, wherein each of the multiple plating layers includes one of a Zn plating layer, a Mg plating layer, and a Zn—Mg alloy plating layer, and the ratio of the weight of Mg contained in the multiple plating layers to the total weight of the multiple plating layers is from 0.13 to 0.24.

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