| abstract |
A grain-oriented electrical steel sheet with excellent magnetic properties and excellent adhesion to a base steel sheet of a primary coating, an annealing separator used in the production of a grain-oriented electrical steel sheet, and a method for producing a grain-oriented electrical steel sheet are provided. A base steel sheet having a predetermined chemical composition, and a primary coating formed on the surface of the base steel sheet and containing Mg 2 SiO 4 as a main component, wherein the primary coating has (1) Al-enriched region number density D3: 0.020 to 0.180 pieces/μm 2 , (2) (total area S5 of regions that are both the passivated oxide layer region and the Al-enriched region)/(total area S3 of the Al-enriched region) ≥ 33%, (3) the passivated oxide layer region and the Al enriched region Distance H5 obtained by subtracting H0 from the average value of the length in the thickness direction of the region that is the enriched region: 0.4 to 4.0 μm, (4) Satisfying the condition of (total area S1 of the cut oxide layer region)/(observed area S0) ≥ 15% Characterized by a grain-oriented electrical steel sheet. |