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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 11473176 B1

PDFFull Text
Date of Patent:
Oct. 18, 2022

Filed:

Oct. 12, 2018

Oriented electrical steel sheet and method for producing same

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Takashi Terashima, Tokyo, JP;

Karin Kokufu, Tokyo, JP;

Toshito Takamiya, Tokyo, JP;

Assignee:

JFE Steel Corporation, Tokyo, JP;

Attorney:

RatnerPrestia

Primary Examiner:

Adam Krupicka

Int. Cl.
CPC ...
C22C 38/00 (2006.01); H01F 1/18 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C23C 14/06 (2006.01); C23C 14/08 (2006.01); C23C 14/10 (2006.01); C23C 14/16 (2006.01); C23C 14/34 (2006.01); C23C 16/30 (2006.01); C23C 16/40 (2006.01);
U.S. Cl.
CPC ...
C22C 38/00 (2013.01); C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C21D 9/46 (2013.01); C23C 14/0641 (2013.01); C23C 14/08 (2013.01); C23C 14/10 (2013.01); C23C 14/16 (2013.01); C23C 14/34 (2013.01); C23C 16/303 (2013.01); C23C 16/40 (2013.01); C21D 2201/05 (2013.01);
Abstract

Provided are: an oriented electrical steel sheet having a high tension applied to a steel sheet and excellent adhesion to a film; and a method for producing the same. This oriented electrical steel sheet includes: a steel sheet; a film A containing a crystalline material disposed on the steel sheet; and a film B containing a vitreous material disposed on the film A, wherein an element profile, which is obtained by using a high-frequency glow discharge light-emission surface analysis method, in the direction from the film B to the steel sheet satisfies formulae (1) and (2). 0.35≤(t/t)≤0.75 . . . (1), 0.25≤(t/t)≤1.00 . . . (2), where trepresents the peak time of an alkali metal element profile, trepresents the half time of an alkali metal.

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