Insulating coating composition for oriented electrical steel sheet, oriented electrical steel sheet having insulating coating formed on surface thereof by using same, and preparation method therefor
US10385218B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2014 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Jun 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B3/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided are an insulation coating composition for an oriented electrical steel sheet, an oriented electrical steel sheet having an insulation coating formed on the surface thereof by using the same, and a manufacturing method thereof, and specifically, it is possible to provide an insulation coating composition for an oriented electrical steel sheet, including 0.1 to 7 wt % of hollow nanoparticles, 0.1 to 5 wt % of ceramic nanofibers, 0.1 to 5 wt % of mesoporous nanoparticles, 30 to 60 wt % of colloidal silica nanoparticles, and 30 to 60 wt % of phosphate, and to provide an oriented electrical steel sheet including an insulation coating produced by the composition on the surface of the oriented electrical steel sheet, including 0.005 to 0.05 wt % of any one element selected from boron (B), vanadium (V), or a combination thereof, 2.6 to 4.3 wt % of silicon (Si), 0.020 to 0.040 wt % of aluminum (Al), 0.01 to 0.20 wt % of manganese (Mn), in which the balance is composed of Fe and other inevitable impurities, and a manufacturing method thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.