Title:
方向性電磁鋼板、方向性電磁鋼板の製造方法、及び、方向性電磁鋼板の製造に利用される焼鈍分離剤
Document Type and Number:
Japanese Patent JP7288202
Kind Code:
B2
Abstract:
Grain-oriented electrical steel sheet excellent in magnetic properties and excellent in adhesion of the primary coating to the steel sheet is provided. The grain-oriented electrical steel sheet according to the present invention is provided with a base metal steel sheet containing a chemical composition containing, by mass%, C: 0.005% or less, Si: 0.5 to 7.0%, Mn: 0.05 to 1.00%, a total of S and Se: 0.005% or less, sol. Al: 0.005% or less, and N: 0.005% or less and having a balance comprised of Fe and impurities and with a primary coating formed on a surface of the base metal steel sheet and containing Mg2SiO4 as a main constituent, wherein a peak position of Al emission intensity obtained when performing elemental analysis by glow discharge optical emission spectrometry from a surface of the primary coating in a thickness direction of the grain-oriented electrical steel sheet is arranged within a range of 2.0 to 12.0 µm from the surface of the primary coating in the thickness direction, and a number density of Al oxides of a size of 0.1 µm or more in terms of a circle equivalent diameter based on the area at the peak position of Al emission intensity is 0.03 to 0.2/µm2.
Inventors:
Ryutaro Yamagata
Ichiro Tanaka
Ichiro Tanaka
Application Number:
JP2020565185A
Publication Date:
June 07, 2023
Filing Date:
January 08, 2020
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C22C38/00; C21D8/12; C22C38/60; H01F1/147
Domestic Patent References:
| JP6017261A | ||||
| JP2011246770A | ||||
| JP2000063950A | ||||
| JP2009270129A |
Foreign References:
| WO2008062853A1 | ||||
| WO2006126660A1 |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mihashi
Ritsuo Fukuchi
Manabu Saito
Kenji Kimura
Atsushi Hirayama
Shinji Mihashi
Ritsuo Fukuchi
Manabu Saito
Kenji Kimura
Atsushi Hirayama