| abstract |
The present invention provides a grain-oriented electrical steel sheet having excellent magnetic properties and excellent adhesion between a primary coating and a base material steel sheet, an annealing separator used in the production of the grain-oriented electrical steel sheet, and a method for producing the grain-oriented electrical steel sheet. The grain-oriented electrical steel sheet is characterized by comprising: a base material steel sheet having a predetermined chemical composition; and a primary film formed on the surface of the base material steel sheet and containing Mg 2 SiO 4 as a main component, wherein the primary film satisfies the following The above-mentioned conditions: (1) Number density D3 of Al-concentrated regions: 0.020 to 0.180 pieces/μm 2 , (2) (total area S5 of regions that are embedded oxide layer regions and Al-concentrated regions)/(Al The total area of the concentrated regions (S3) ≥ 33%, (3) the distance H5 obtained by subtracting H0 from the average value of the length in the thickness direction of the region as the embedded oxide layer region and as the Al-concentrated region: 0.4 to 4.0 μm, (4) (total area S1 of the embedded oxide layer region)/(observation area S0)≥15%. |