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US 11,566,302 B2Granted
Grain-oriented electrical steel sheet and method for manufacturing same
AssigneeJfe Steel Corporation
InventorsTakeshi Omura, Hirotaka Inoue, Kunihiro Senda, Seiji Okabe
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Abstract
Provided is a grain-oriented electrical steel sheet having better transformer iron loss property than conventional grain-oriented electrical steel sheets. A grain-oriented electrical steel sheet comprises: a steel substrate; a forsterite film on a surface of the steel substrate; and a Cr-depleted layer at a boundary between the steel substrate and the forsterite film, the Cr-depleted layer having a Cr concentration that is 0.70 times to 0.90 times a Cr concentration of the steel substrate.
Claims13
A grain-oriented electrical steel sheet comprising:
- a steel substrate;
- a forsterite film on a surface of the steel substrate;
- and
- a Cr-depleted layer at a boundary between the steel substrate and the forsterite film, the Cr-depleted layer having a Cr concentration that is 0.70 times to 0.90 times a Cr concentration of the steel substrate,
- wherein the steel substrate contains Cr:
- 0.01 mass % or more and 0.25 mass % or less.
3 more elements
Dependencies are inferred from the claim text.