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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 10987695 B1

PDFFull Text
Date of Patent:
Apr. 27, 2021

Filed:

Mar. 31, 2016

Hot-dip zinc-based plated steel sheet

Applicant:

Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;

Inventors:

Koji Akioka, Tokyo, JP;

Yasuaki Kawamura, Tokyo, JP;

Akihiro Sengoku, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
C22C 38/54 (2006.01); C22C 38/50 (2006.01); C22C 38/26 (2006.01); C22C 38/22 (2006.01); C22C 38/06 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C22C 38/00 (2006.01); C23C 2/06 (2006.01); C23C 2/28 (2006.01); C23C 2/40 (2006.01); C21D 1/18 (2006.01); B21D 22/02 (2006.01); B05D 7/14 (2006.01); B05D 3/02 (2006.01); B05D 1/40 (2006.01); C23C 28/00 (2006.01); B32B 15/01 (2006.01); C23C 2/26 (2006.01); C22C 38/58 (2006.01); C09D 7/61 (2018.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C22C 38/44 (2006.01); C22C 38/12 (2006.01); C23C 28/02 (2006.01); B32B 15/04 (2006.01); C22C 38/18 (2006.01); C22C 38/40 (2006.01); C22C 38/14 (2006.01); C22C 38/08 (2006.01); C23C 28/04 (2006.01); C22C 38/48 (2006.01); C23C 30/00 (2006.01); B32B 15/18 (2006.01);
U.S. Cl.
CPC ...
B05D 1/40 (2013.01); B05D 3/0272 (2013.01); B05D 7/14 (2013.01); B21D 22/022 (2013.01); B32B 15/013 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/18 (2013.01); C09D 7/61 (2018.01); C21D 1/18 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/18 (2013.01); C22C 38/22 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/40 (2013.01); C22C 38/44 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); C22C 38/58 (2013.01); C23C 2/06 (2013.01); C23C 2/26 (2013.01); C23C 2/28 (2013.01); C23C 2/40 (2013.01); C23C 28/00 (2013.01); C23C 28/021 (2013.01); C23C 28/025 (2013.01); C23C 28/042 (2013.01); C23C 28/30 (2013.01); C23C 28/32 (2013.01); C23C 28/321 (2013.01); C23C 28/3225 (2013.01); C23C 28/345 (2013.01); C23C 28/3455 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); C21D 2211/008 (2013.01); Y10T 428/1259 (2015.01); Y10T 428/12569 (2015.01); Y10T 428/12583 (2015.01); Y10T 428/12611 (2015.01); Y10T 428/12618 (2015.01); Y10T 428/12667 (2015.01); Y10T 428/12799 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12979 (2015.01); Y10T 428/24967 (2015.01); Y10T 428/27 (2015.01); Y10T 428/273 (2015.01);
Abstract

A hot-dip zinc-based plated steel sheet includes: a base steel sheet that is a metal substrate; a hot-dip zinc-based plating layer provided on the base steel sheet; and a surface treatment layer formed on at least one surface of the hot-dip zinc-based plating layer, in which the surface treatment layer contains more than or equal to 0.1 g/mand less than or equal to 1.2 g/mof granular oxide per one surface on a metal basis in which, in a temperature range of 900 to 1300 K, standard free energy of formation (ΔG) of oxide is smaller than standard free energy of formation (ΔG) of zinc oxide and larger than standard free energy of formation (ΔG) of aluminum oxide at an identical temperature, and the granular oxide has a particle size of more than or equal to 3 nm and less than or equal to 100 nm.

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