FIELD: metallurgy.
SUBSTANCE: electrotechnical steel sheet with oriented grain structure has main steel sheet, intermediate layer in contact with main steel sheet and insulating coating in contact with intermediate layer and serving as outer surface, wherein content of Cr in insulating coating is on average 0.1 at% or more, and in cross section, parallel to direction of thickness, insulating coating has a layer of chemical compounds containing a crystalline phosphide in a region in contact with the intermediate layer. Disclosed also is a method of producing electrotechnical steel sheet.
EFFECT: reduction of losses in steel sheet and increase of moisture resistance of insulating coating due to exclusion of surface roughness.
8 cl, 5 tbl, 5 ex, 3 dwg
| Title |
Year |
Author |
Number |
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2020 |
- Takatani Shinsuke
- Ushigami Yoshiyuki
|
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2020 |
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|
RU2730822C1 |
