Annealing separating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for manufacturing grain oriented electrical steel sheet
Provided is an annealing separating agent composition for a grain-oriented electrical steel sheet, a grain-oriented electrical steel sheet and a method for manufacturing a grain-oriented electrical steel sheet. The annealing separating agent composition for a grain-oriented electrical steel sheet according to an embodiment of the present invention contains 30 to 70% by weight of a calcium compound, and the remainder of magnesium oxide or magnesium hydroxide on a solid basis.
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 (Ca 3 Co 4 O 9 ), calcium silicate (CaSiO 3 ), calcium titanate (CaTiO 3 ), calcium zirconate (CaZrO 3 ), hydroxyapatite (Ca 5 (OH)(PO 4 ) 3 ), calcium carbonate (CaCO 3 ), calcium hydride (CaH 2 ), calcium carbide (CaC 2 ), calcium phosphate (Ca 3 (PO 4 ) 2 ), calcium sulfate (CaSO 4 ), calcium oxylate (CaC 2 O 4 ), calcium peroxide (CaO 2 ), and calcium chromate (CaCrO 4 ).
2. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 ,
wherein the ceramic powder is at least one selected from the group consisting of Al 2 O 3 , SiO 2 , TiO 2 , and ZrO 2 .
3. 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 1 to 10% by weight of Sb 2 (SO 4 ) 3 , SrSO 4 , BaSO 4 , or a combination thereof 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 (Ca 3 Co 4 O 9 ), calcium silicate (CaSiO 3 ), calcium titanate (CaTiO 3 ), calcium zirconate (CaZrO 3 ), hydroxyapatite (Ca 5 (OH)(PO 4 ) 3 ), calcium carbonate (CaCO 3 ), calcium hydride (CaH 2 ), calcium carbide (CaC 2 ), calcium phosphate (Ca 3 (PO 4 ) 2 ), calcium sulfate (CaSO 4 ), calcium oxylate (CaC 2 O 4 ), calcium peroxide (CaO 2 ), and calcium chromate (CaCrO 4 ).
4. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the calcium compound comprises calcium cobalt oxide (Ca 3 Co 4 O 9 ).
5. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the calcium compound comprises calcium silicate (CaSiO 3 ).
6. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the calcium compound comprises calcium titanate (CaTiO 3 ).
7. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the calcium compound comprises calcium zirconate (CaZrO 3 ).
8. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the calcium compound comprises hydroxyapatite (Ca 5 (OH)(PO 4 ) 3 ).
9. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the calcium compound comprises calcium carbonate (CaCO 3 ).
10. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the calcium compound comprises calcium hydride (CaH 2 ).
11. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the calcium compound comprises calcium carbide (CaC 2 ).
12. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the calcium compound comprises calcium phosphate (Ca 3 (PO 4 ) 2 ).
13. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the calcium compound comprises calcium sulfate (CaSO 4 ).
14. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the calcium compound comprises calcium oxylate (CaC 2 O 4 ).
15. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the calcium compound comprises calcium peroxide (CaO 2 ).
16. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the calcium compound comprises calcium chromate (CaCrO 4 ).
17. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the ceramic powder comprises Al 2 O 3 .
18. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the ceramic powder comprises SiO 2 .
19. The annealing separating agent composition for a grain-oriented electrical steel sheet according to claim 1 , wherein the ceramic powder comprises TiO 2 or ZrO 2 .