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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 9260787 B1

PDFFull Text
Date of Patent:
Feb. 16, 2016

Filed:

Dec. 20, 2012

Hot-dip galvanized steel sheet having excellent adhesiveness at ultra-low temperatures

Applicant:

Posco, Gyeongsangbuk-do, KR;

Inventors:

Ju-Youn Lee, Jeollanam-do, KR;

Myung-Soo Kim, Jeollanam-do, KR;

Jong-Sang Kim, Jeollanam-do, KR;

Assignee:

POSCO, Pohang-Si, Gyeongsangbuk-Do, KR;

Attorney:

Finnegan Henderson Farabow Garrett & Dunner LLP

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
B32B 15/01 (2006.01); C23C 28/02 (2006.01); B32B 15/04 (2006.01); B32B 15/18 (2006.01); B32B 15/20 (2006.01); C23C 2/02 (2006.01); C23C 2/06 (2006.01); C21D 8/02 (2006.01); C23C 2/28 (2006.01); C23C 2/20 (2006.01); C21D 1/74 (2006.01); C25D 3/20 (2006.01); C25D 5/36 (2006.01); C25D 5/50 (2006.01);
U.S. Cl.
CPC ...
C23C 28/025 (2013.01); B32B 15/015 (2013.01); C21D 8/0236 (2013.01); C21D 8/0278 (2013.01); C23C 2/02 (2013.01); C23C 2/06 (2013.01); C23C 2/20 (2013.01); C23C 2/28 (2013.01); C23C 28/021 (2013.01); C21D 1/74 (2013.01); C25D 3/20 (2013.01); C25D 5/36 (2013.01); C25D 5/50 (2013.01); Y10T 428/12438 (2015.01); Y10T 428/12799 (2015.01);
Abstract

Provided is a hot-dip galvanized steel sheet having excellent adhesiveness at ultra-low temperatures as well as fine spangles, and a method of manufacturing the same. According to the present invention, a hot-dip galvanized steel sheet having excellent adhesiveness at ultra-low temperatures includes a base steel sheet, a composite layer formed on the base steel sheet and including transition metal, an inhibition layer formed on the composite layer and including a iron-aluminum (Fe—Al) based intermetallic compound, and a zinc (Zn)-plated layer formed on the inhibition layer, in which an average diameter of spangles in the zinc-plated layer is 150 μm or less, and a method of manufacturing the hot-dip galvanized steel sheet is provided.

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