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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 11091842 B1

PDFFull Text
Date of Patent:
Aug. 17, 2021

Filed:

Oct. 17, 2017

Oriented electromagnetic steel sheet and method for manufacturing oriented electromagnetic steel sheet

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Takumi Umada, Tokyo, JP;

Shigehiro Takajo, Tokyo, JP;

Takashi Terashima, Tokyo, JP;

Minoru Takashima, Tokyo, JP;

Yasuyuki Hayakawa, Tokyo, JP;

Assignee:

JFE STEEL CORPORATION, Tokyo, JP;

Attorney:

Ratnerprestia

Primary Examiner:

Daniel J Schleis

Assistant Examiner:

Kevin C T Li

Int. Cl.
CPC ...
C23F 17/00 (2006.01); C23C 14/06 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/00 (2006.01); C22C 38/60 (2006.01); C23D 5/02 (2006.01); C21D 9/46 (2006.01); C21D 8/12 (2006.01); C21D 6/00 (2006.01); C21D 3/04 (2006.01); H01F 1/18 (2006.01); B32B 15/04 (2006.01); C23C 28/04 (2006.01); C23C 14/00 (2006.01); C23C 14/22 (2006.01); C23C 16/36 (2006.01); C23C 16/34 (2006.01); C23C 16/32 (2006.01);
U.S. Cl.
CPC ...
C23F 17/00 (2013.01); B32B 15/04 (2013.01); C21D 3/04 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/1222 (2013.01); C21D 8/1261 (2013.01); C21D 8/1283 (2013.01); C21D 8/1288 (2013.01); C21D 9/46 (2013.01); C22C 38/001 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/60 (2013.01); C23C 14/0021 (2013.01); C23C 14/0635 (2013.01); C23C 14/0641 (2013.01); C23C 14/0664 (2013.01); C23C 14/221 (2013.01); C23C 16/32 (2013.01); C23C 16/34 (2013.01); C23C 16/36 (2013.01); C23C 28/042 (2013.01); C23D 5/02 (2013.01); H01F 1/18 (2013.01);
Abstract

Provided are: an oriented electromagnetic steel sheet with outstanding coating adhesion and magnetic properties after stress relief annealing; and a method for manufacturing the oriented electromagnetic steel sheet. The oriented electromagnetic steel sheet comprises: a steel sheet; a non-oxide ceramic coating disposed on the steel sheet and containing a non-oxide; and an insulating tensile coating disposed on the non-oxide ceramic coating and containing an oxide. The thickness of the non-oxide ceramic coating is 0.020-0.400 μm. The thickness of the insulating tensile coating is at least 1.0 μm. The chromium content on the steel plate side of the non-oxide ceramic coating is less than 25 atomic %, and the chromium content on the insulating tensile coating side of the non-oxide ceramic coating is at least 25 atomic %.

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