Non-oriented electrical steel sheet and method for manufacturing same
AssigneeJfe Steel Corporation
InventorsSouichiro Yoshizaki, Yukino Miyamoto, Yoshiaki Zaizen, Kunihiro Senda
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Abstract
Provided is a non-oriented electrical steel sheet having excellent adhesion with an insulating coating even if the thickness of the insulating coating is reduced. The non-oriented electrical steel sheet of the present disclosure has an insulating coating on at least one surface of the steel sheet, where the insulating coating has a P-concentrated layer on both a surface side and an interface side with a steel substrate, and a P concentration of the P-concentrated layer is higher than a P concentration in the steel substrate.
Claims15
A non-oriented electrical steel sheet comprising an insulating coating on at least one surface of the steel sheet, wherein
- the insulating coating has a P-concentrated layer on both a surface side and an interface side with a steel substrate,
- a P concentration of the P-concentrated layer is higher than a P concentration in the steel substrate,
- the steel sheet has a thickness of 0.20 mm or less and a concentration gradient in which a Si concentration decreases from a surface side of the steel sheet toward a center side of the steel sheet, and
- difference in the Si concentration between a surface layer of the steel sheet and a center layer of the steel sheet in the concentration gradient is 1.0 mass % to 5.0 mass %.
Dependencies are inferred from the claim text.