Patent ID: 11946114
Assignee: POSCO CO., LTD
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. An annealing separating agent composition for a grain-oriented electrical steel sheet comprising, based on a solid content of the annealing separating agent composition, 30 to 70% by weight of a calcium compound, 1 to 10% by weight of a ceramic powder and a balance of magnesium oxide or magnesium hydroxide,
wherein the calcium compound is at least one selected from the group consisting of calcium cobalt oxide (Ca3Co4O9), calcium silicate (CaSiO3), calcium titanate (CaTiO3), calcium zirconate (CaZrO3), hydroxyapatite (Ca5(OH)(PO4)3), calcium carbonate (CaCO3), calcium hydride (CaH2), calcium carbide (CaC2), calcium phosphate (Ca3(PO4)2), calcium sulfate (CaSO4), calcium oxylate (CaC2O4), calcium peroxide (CaO2), and calcium chromate (CaCrO4).