公开(公告)号：US20250043373A1

公开(公告)日：2025-02-06

申请号：US18923474

申请日：2024-10-22

Applicant: NIPPON STEEL CORPORATION

Inventor： Shuichi YAMAZAKI ,  Kazutoshi TAKEDA ,  Hiroyasu FUJII ,  Toru NAGAI

IPC: C21D8/12 ,  C09D1/00 ,  C09D7/40 ,  C09D7/61 ,  C23C30/00

Abstract: In the present invention, there is provided a coating liquid for forming an insulation coating for a grain-oriented electrical steel sheet, including: a solvent; and one or two more layered clay mineral powders having a specific surface area of 20 m2/g or more. In addition, in the present invention, there is provided a grain-oriented electrical steel sheet including: a base metal; and an insulation coating provided on a surface of the base metal, in which the insulation coating contains SiO2, and one or two of Al2O3 and MgO, and has a porosity of 10% or less.

公开(公告)号：US20210002738A1

公开(公告)日：2021-01-07

申请号：US16975668

申请日：2019-03-19

Applicant: NIPPON STEEL CORPORATION

Inventor： Shuichi YAMAZAKI ,  Kazutoshi TAKEDA ,  Hiroyasu FUJII ,  Toru NAGAI

IPC: C21D8/12 ,  C23C30/00 ,  C09D1/00 ,  C09D7/61 ,  C09D7/40

Abstract: In the present invention, there is provided a coating liquid for forming an insulation coating for a grain-oriented electrical steel sheet, including: a solvent; and one or two more layered clay mineral powders having a specific surface area of 20 m2/g or more. In addition, in the present invention, there is provided a grain-oriented electrical steel sheet including: a base metal; and an insulation coating provided on a surface of the base metal, in which the insulation coating contains SiO2, and one or two of Al2O3 and MgO, and has a porosity of 10% or less.