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.:
Date of Patent:
May. 17, 2011
Filed:
Nov. 15, 2007
Grain-oriented electrical steel sheet excellent in coating adhesion and method of producing the same
Yuji Kubo, Tokyo, JP;
Eiichi Nanba, Tokyo, JP;
Satoshi Arai, Tokyo, JP;
Hotaka Honma, Tokyo, JP;
Kazumi Mizukami, Tokyo, JP;
Koki Tanaka, Tokyo, JP;
Yuji Kubo, Tokyo, JP;
Eiichi Nanba, Tokyo, JP;
Satoshi Arai, Tokyo, JP;
Hotaka Honma, Tokyo, JP;
Kazumi Mizukami, Tokyo, JP;
Koki Tanaka, Tokyo, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
Grain-oriented electrical steel sheet excellent in coating adhesion is provided. The steel sheet contains Si: 2 to 7% mass % and has a primary coating composed mainly of forsterite on its surface. A compound (A) containing one or more elements selected from among Ca, Sr and Ba, at least one rare earth metal, and sulfur is incorporated in the primary coating so as to reside in the interface layer between the primary coating and the steel sheet. As a result, occurrence of primary coating exfoliation at regions that are strongly worked during manufacture of a wound core transformer or the like is prevented.