发明授权
- 专利标题: ELECTROMAGNETIC STEEL SHEET HAVING INSULATING COATING FILM ATTACHED THERETO
- 专利标题(中): 具有绝缘涂层膜的电磁钢板
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申请号: EP14800704.0申请日: 2014-05-13
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公开(公告)号: EP3000915B1公开(公告)日: 2017-09-13
- 发明人: SASHI, Kazumichi , MURAMATSU, Naoki , FUJIBAYASHI, Nobue , KUBOTA, Takahiro
- 申请人: JFE Steel Corporation
- 申请人地址: 2-3, Uchisaiwai-cho 2-chome Chiyoda-ku Tokyo, 100-0011 JP
- 专利权人: JFE Steel Corporation
- 当前专利权人: JFE Steel Corporation
- 当前专利权人地址: 2-3, Uchisaiwai-cho 2-chome Chiyoda-ku Tokyo, 100-0011 JP
- 代理机构: Grünecker Patent- und Rechtsanwälte PartG mbB
- 优先权: JP2013108456 20130523
- 国际公布: WO2014188679 20141127
- 主分类号: C23C22/74
- IPC分类号: C23C22/74 ; C21D8/12 ; H01F1/18 ; C23C22/08 ; C23C22/62 ; H01B1/22 ; H01B1/24 ; H01B3/00 ; C09D1/00 ; C09D7/12 ; C23C18/12
摘要:
Provided is an electrical steel sheet provided with an insulating coating which has high corrosion resistance and high adhesion. The electrical steel sheet provided with an insulating coating includes an electrical steel sheet and an insulating coating disposed on the electrical steel sheet. The insulating coating includes Zr and Fe. The content of Zr in the insulating coating is 0.05 to 1.50 g/m 2 in terms of ZrO 2 . The compositional ratio between Zr and Fe is such that the molar ratio of Fe to Zr, that is, the ratio of the amount (moles) of Fe included in the insulating coating to the amount (moles) of Zr included in the insulating coating, is 0.10 to 2.00. It is preferable that the insulating coating further includes Si and the compositional ratio between Zr and Si is such that the molar ratio of Si to Zr, that is, the ratio of the amount (moles) of Si included in the insulating coating to the amount (moles) of Zr included in the insulating coating, is 2.00 or less.
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