发明授权
EP3000915B1 ELECTROMAGNETIC STEEL SHEET HAVING INSULATING COATING FILM ATTACHED THERETO 有权
具有绝缘涂层膜的电磁钢板

ELECTROMAGNETIC STEEL SHEET HAVING INSULATING COATING FILM ATTACHED THERETO
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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