Composition for forming insulating film on electrical steel sheet, electrical steel sheet, and method for manufacturing electrical steel sheet
AssigneePosco
InventorsMin-Soo Han, Hyunseok Ko, Jaekyoum Kim, Gyeongryeol Park
Life of this patent
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Abstract
A composition for forming an insulation film of an electrical steel sheet according to an embodiment of the present disclosure includes: 100 parts by weight of metal phosphate that includes at least one of Al, Mg, Co, Ca, Sr, Ba, Zn, and Mn; 3 to 150 parts by weight of a carbon structure; 3 to 150 parts by weight of oxide that includes at least two of Al, Si, Mg, and Fe; and 50 to 250 parts by weight of silica. A sum amount of the carbon structure and the oxide includes 20 to 150 parts by weight.
Claims12
A composition for forming an insulation film of an electrical steel sheet, comprising:
- 100 parts by weight of metal phosphate that includes at least one of Al, Mg, Co, Ca, Sr, Ba, Zn, and Mn;
- 3 to 150 parts by weight of a carbon structure;
- 3 to 150 parts by weight of oxide that includes at least two of Al, Si, Mg, and Fe;
- and
- 50 to 250 parts by weight of silica,
- wherein a sum amount of the carbon structure and the oxide includes 20 to 150 parts by weight.
An electrical steel sheet, comprising:
- an electrical steel sheet substrate;
- and
- an insulation film that is disposed on a surface of the electrical steel sheet substrate,
- wherein the insulation film includes 100 parts by weight of metal phosphate that includes at least one of Al, Mg, Co, Ca, Sr, Ba, Zn, and Mn, 3 to 150 parts by weight of a carbon structure, 3 to 150 parts by weight of oxide that includes at least two of Al, Si, Mg, and Fe, and 50 to 250 parts by weight of silica, and a sum amount of the carbon structure and the oxide includes 20 to 150 parts by weight.
Dependencies are inferred from the claim text.