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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 9963755 B1

PDFFull Text
Date of Patent:
May. 08, 2018

Filed:

Apr. 07, 2015

Hot-pressed member

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Hiroki Nakamaru, Tokyo, JP;

Seiji Nakajima, Tokyo, JP;

Tatsuya Miyoshi, Tokyo, JP;

Hiroyuki Masuoka, Tokyo, JP;

Shinji Ootsuka, Tokyo, JP;

Assignee:

JFE Steel Corporation, Tokyo, JP;

Attorney:

RatnerPrestia

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
C23C 30/00 (2006.01); C23C 28/00 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C22C 38/00 (2006.01); C22C 38/34 (2006.01); C22C 38/32 (2006.01); C22C 38/28 (2006.01); C22C 38/14 (2006.01); C22C 38/60 (2006.01); C22C 38/06 (2006.01); C22C 38/38 (2006.01); B32B 15/00 (2006.01); C21D 8/02 (2006.01); C23C 2/28 (2006.01); B32B 15/01 (2006.01); B32B 15/04 (2006.01); C23C 2/06 (2006.01); B32B 15/18 (2006.01); C22C 18/00 (2006.01); C22C 38/18 (2006.01); C23C 10/28 (2006.01); C25D 5/48 (2006.01); C25D 5/50 (2006.01); C21D 1/673 (2006.01); C23C 2/26 (2006.01); C23C 10/60 (2006.01); C23C 26/00 (2006.01); C25D 3/56 (2006.01); C21D 8/04 (2006.01);
U.S. Cl.
CPC ...
C21D 8/0247 (2013.01); B32B 15/01 (2013.01); B32B 15/013 (2013.01); B32B 15/015 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/18 (2013.01); C21D 1/673 (2013.01); C22C 18/00 (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 38/14 (2013.01); C22C 38/18 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/34 (2013.01); C22C 38/38 (2013.01); C22C 38/60 (2013.01); C23C 2/06 (2013.01); C23C 2/26 (2013.01); C23C 2/28 (2013.01); C23C 10/28 (2013.01); C23C 10/60 (2013.01); C23C 26/00 (2013.01); C23C 28/321 (2013.01); C23C 28/322 (2013.01); C23C 28/325 (2013.01); C23C 28/345 (2013.01); C23C 30/005 (2013.01); C25D 5/48 (2013.01); C25D 5/50 (2013.01); C21D 8/0457 (2013.01); C21D 2251/02 (2013.01); C25D 3/565 (2013.01); Y10T 428/1259 (2015.01); Y10T 428/1266 (2015.01); Y10T 428/12486 (2015.01); Y10T 428/12611 (2015.01); Y10T 428/12618 (2015.01); Y10T 428/12674 (2015.01); Y10T 428/12757 (2015.01); Y10T 428/12792 (2015.01); Y10T 428/12799 (2015.01); Y10T 428/12806 (2015.01); Y10T 428/12931 (2015.01); Y10T 428/12937 (2015.01); Y10T 428/12944 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12979 (2015.01); Y10T 428/2495 (2015.01); Y10T 428/24967 (2015.01); Y10T 428/264 (2015.01); Y10T 428/265 (2015.01);
Abstract

A hot-pressed member includes a steel sheet, a Ni-diffusion region present in a surface layer of the steel sheet, and an intermetallic compound layer and a ZnO layer which are provided in order on the Ni-diffusion region, the intermetallic compound layer corresponding to a γ phase present in a phase equilibrium diagram of a Zn—Ni alloy, wherein a spontaneous immersion potential indicated in a 0.5 M NaCl aqueous air-saturated solution at 25° C.±5° C. is −600 to −360 mV based on a standard hydrogen electrode.

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