Title:
方向性電磁鋼板
Document Type and Number:
Japanese Patent JP7010306
Kind Code:
B2
Abstract:
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.
Inventors:
Masato Yasuda
Ushigami Yoshiyuki
Takahashi Katsu
Shinya Yano
Ushigami Yoshiyuki
Takahashi Katsu
Shinya Yano
Application Number:
JP2019567148A
Publication Date:
February 10, 2022
Filing Date:
January 24, 2019
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C22C38/00; C22C38/60; C23C22/00; H01F1/147
Domestic Patent References:
| JP2004332071A | ||||
| JP2012144777A | ||||
| JP11269544A |
Foreign References:
| WO2012096350A1 | ||||
| WO2011007817A1 | ||||
| KR1020120071825A |
Attorney, Agent or Firm:
Sumio Tanai
Mitsuo Teramoto
Tomomasa Katsumata
Hiroshi Yamaguchi
Mitsuo Teramoto
Tomomasa Katsumata
Hiroshi Yamaguchi