| 摘要 |
The present invention relates to: an insulating coating composition for an oriented electrical steel sheet; an oriented electrical steel sheet having an insulating coating formed on the surface thereof by using the same; and a preparation method therefor, and specifically, can provide an insulating coating composition for an oriented electrical steel sheet, the insulating coating composition comprising 0.1-7 wt% of hollow nanoparticles, 0.1-5 wt% of a ceramic nanofiber, 0.1-5 wt% of mesoporous nanoparticles, 30-60 wt% of colloidal silica nanoparticles, and 30-60 wt% of a phosphate, and can provide: an oriented electrical steel sheet comprising 0.005-0.05 wt% of any one element selected from boron (B), vanadium (V) or a combination thereof, 2.6-4.3 wt% of silicon (Si), 0.020-0.040 wt% of aluminum (Al), 0.01-0.20 wt% of manganese (Mn), and the balance of Fe and other inevitable impurities, and comprising an insulating coating made from the composition on the surface of the oriented electrical steel sheet; and a preparation method therefor. |
