Title:
ORIENTED ELECTROMAGNETIC STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2022/250163
Kind Code:
A1
Abstract:
Provided is an oriented electromagnetic steel sheet having a base steel sheet, an intermediate layer, and an insulating film, wherein: the intermediate layer is an oxidized film; the average film thickness of the oxidized film is 2-500 nm; the insulating film is a phosphoric acid-based film; the average film thickness of the phosphoric acid-based film is 0.1-10 μm; when fine angle incidence X-ray diffraction is performed on the phosphoric acid-based film using a Co-Kα excitation source, the X-ray diffraction pattern has a diffraction peak derived from cristobalite-type aluminum phosphate at a diffraction angle of 2θ=24.8°; and a full width at half maximum FWHM0.5 of the diffraction peak under a diffraction condition with an X-ray incident angle ω=0.5° and a full width at half maximum FWHM1.0 of the diffraction peak under a diffraction condition with an X-ray incident angle ω=1.0° satisfy 0.20°≤FWHM0.5≤2.00°, 0.20°≤FWHM1.0≤2.00°, and 0°≤|FWHM0.5-FWHM1.0|≤1.00°.
Inventors:
TAKATANI SHINSUKE (JP)
TAKEDA KAZUTOSHI (JP)
TAKAHASHI MASARU (JP)
USHIGAMI YOSHIYUKI (JP)
TAKEDA KAZUTOSHI (JP)
TAKAHASHI MASARU (JP)
USHIGAMI YOSHIYUKI (JP)
Application Number:
PCT/JP2022/021839
Publication Date:
December 01, 2022
Filing Date:
May 27, 2022
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C23C22/00; C21D8/12; C21D9/46; C22C38/00; C22C38/60; H01F1/147
Domestic Patent References:
| WO2019013348A1 | 2019-01-17 | |||
| WO2013099274A1 | 2013-07-04 | |||
| WO2020149321A1 | 2020-07-23 | |||
| WO2002088403A1 | 2002-11-07 | |||
| WO2019013353A1 | 2019-01-17 | |||
| WO2019013348A1 | 2019-01-17 |
Foreign References:
| JPH03130377A | 1991-06-04 | |||
| JP2002249881A | 2002-09-06 | |||
| JPS4996920A | 1974-09-13 |
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (JP)
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