- Patent Title: Composition for forming insulation film of oriented electrical steel sheet, method for forming insulation film by using same, and oriented electrical steel sheet having insulation film formed therein
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Application No.: US15770098Application Date: 2015-12-22
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Publication No.: US11667985B2Publication Date: 2023-06-06
- Inventor: Min Soo Han , Hyung Don Joo , Hyung Ki Park , Jae-Keun Shin , Chang-Soo Kim
- Applicant: POSCO
- Applicant Address: KR Pohang-si
- Assignee: POSCO Co., Ltd
- Current Assignee: POSCO Co., Ltd
- Current Assignee Address: KR Pohang-si
- Agency: Morgan, Lewis & Bockius LLP
- Priority: KR 20150146105 2015.10.20
- International Application: PCT/KR2015/014108 2015.12.22
- International Announcement: WO2017/069336A 2017.04.27
- Date entered country: 2018-04-20
- Main IPC: C21D8/12
- IPC: C21D8/12 ; C22C38/00 ; C23C22/22 ; C22C38/02 ; C23C22/74 ; C21D1/30 ; C22C38/04 ; C22C38/06 ; C22C38/18 ; C22C38/60
Abstract:
The present invention relates to a composition for forming an insulation coating film of an oriented electrical steel sheet, including a first component (A) including a composite metal phosphate, a derivative thereof, or a mixture thereof, and a second component (B) including at least two colloidal silicas having different average particle diameters, a method for forming an insulation coating film using the same, and an oriented electrical steel sheet having an insulation coating film formed thereon.
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