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Title:
ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING ORIENTED ELECTROMAGNETIC STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2018/074462
Kind Code:
A1
Abstract:
Provided are: an oriented electromagnetic steel sheet with outstanding coating adhesion and magnetic properties after stress relief annealing; and a method for manufacturing the oriented electromagnetic steel sheet. The oriented electromagnetic steel sheet comprises: a steel sheet; a non-oxide ceramic coating disposed on the steel sheet and containing a non-oxide; and an insulating tensile coating disposed on the non-oxide ceramic coating and containing an oxide. The thickness of the non-oxide ceramic coating is 0.020–0.400 µm. The thickness of the insulating tensile coating is at least 1.0 µm. The chromium content on the steel plate side of the non-oxide ceramic coating is less than 25 atomic %, and the chromium content on the insulating tensile coating side of the non-oxide ceramic coating is at least 25 atomic %.

Inventors:
UMADA TAKUMI (JP)
TAKAJO SHIGEHIRO (JP)
TERASHIMA TAKASHI (JP)
TAKASHIMA MINORU (JP)
HAYAKAWA YASUYUKI (JP)
Application Number:
PCT/JP2017/037506
Publication Date:
April 26, 2018
Filing Date:
October 17, 2017
Export Citation:
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Assignee:
JFE STEEL CORP (JP)
International Classes:
C23C28/04; B32B15/04; C21D8/12; C21D9/46; C22C38/00; C22C38/60; H01F1/147
Foreign References:
JP2006261602A2006-09-28
JPH0754155A1995-02-28
JPH01176034A1989-07-12
JPS6468425A1989-03-14
Other References:
P. PANJAN ET AL., THIN SOLID FILMS, vol. 281-282, 1996, pages 298
See also references of EP 3514261A4
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
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