发明授权
- 专利标题： Grain-oriented electrical steel sheet excellent in coating adhesion and method of producing the same
- 专利标题（中）： 涂层附着力优异的晶粒取向电工钢板及其制造方法
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申请号： US12312427申请日： 2007-11-15
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公开(公告)号： US07942982B2公开(公告)日： 2011-05-17
- 发明人: Yuji Kubo , Eiichi Nanba , Satoshi Arai , Hotaka Honma , Kazumi Mizukami , Koki Tanaka
- 申请人： Yuji Kubo , Eiichi Nanba , Satoshi Arai , Hotaka Honma , Kazumi Mizukami , Koki Tanaka
- 申请人地址： JP Tokyo
- 专利权人： Nippon Steel Corporation
- 当前专利权人： Nippon Steel Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Kenyon & Kenyon LLP
- 优先权： JP2006-315527 20061122
- 国际申请： PCT/JP2007/072600 WO 20071115
- 国际公布： WO2008/062853 WO 20080529
- 主分类号： H01F1/147
- IPC分类号： H01F1/147
摘要：
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.
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