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KR102478960B1 방향성 전자 강판 有权

  • 专利标题： 방향성 전자 강판
  • 专利标题（英）： GRAIN-ORIENTED ELECTRICAL STEEL SHEET
  • 申请号： KR1020207022652
    申请日： 2019-01-24
  • 公开(公告)号： KR102478960B1
    公开(公告)日： 2022-12-19
  • 优先权： JPJP-P-2018-010301 2018-01-25
  • 国际申请： PCT/JP2019/002265 2019-01-24
  • 国际公布： WO2019146697 2019-08-01
  • 主分类号： C22C38/02
  • IPC分类号： C22C38/02 ;  C22C38/60 ;  C22C38/00 ;  C23C22/00 ;  C23C8/26 ;  H01F1/147 ;  C21D8/12 ;  C21D9/46
방향성 전자 강판
摘要：
이방향성전자강판은, 모재강판과, 상기모재강판상에접하여형성된글라스피막과, 상기글라스피막상에접하여형성되고, 인산염과콜로이드상실리카를주체로하는절연피막을구비한다. 상기모재강판은, 소정의화학성분을함유하고, 글라스피막과절연피막의계면으로부터모재강판의방향을향하여깊이방향으로 5㎛의범위에, 평균입경이 50 내지 300nm인 BN이소정의개수밀도로존재한다. 상기절연피막의표면으로부터글로방전발광분석으로 B의발광강도를측정한때, 상기글라스피막내부에있어서의 B의발광강도가상기모재강판내부에있어서의 B의발광강도보다도크다.
摘要（英）：

A grain oriented electrical steel sheet includes: a base steel sheet; a glass film which is arranged in contact with the base steel sheet; and an insulation coating which is arranged in contact with the glass film and which includes a phosphate and a colloidal silica as main components. The base steel sheet include the predetermined chemical composition. A BN whose average particle size is 50 to 300 nm is included at a predetermined number density in a region which is from an interface between the glass film and the base steel sheet till 5 µm in a depth direction in the glass film. A B emission intensity obtained inside the glass film is more than a B emission intensity obtained inside the base steel sheet, when a B emission intensity is measured from a surface of the insulation coating by a glow discharge emission spectroscopy.

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