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US 2025/0109452 A1Published application
Coating liquid for forming insulation coating for grain-oriented electrical steel sheets, grain-oriented electrical steel sheet, and method for producing grain-oriented electrical steel sheet
AssigneeNippon Steel Corporation
InventorsShuichi YAMAZAKI, Shinsuke TAKATANI, Hiroyasu FUJII, Kazutoshi TAKEDA
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Abstract
A coating liquid for forming an insulation coating for grain-oriented electrical steel sheets, which contains boric acid and hydrated silicate particles containing aluminum, a method for producing a grain-oriented electrical steel sheet comprising applying the coating liquid to a grain-oriented electrical steel sheet after final annealing, and then performing a baking treatment, and a grain-oriented electrical steel sheet.
Claims2
A grain-oriented electrical steel sheet, comprising
- a base material of a grain-oriented electrical steel sheet, and
- an insulation coating provided on the base material of the grain-oriented electrical steel sheet by a baking treatment at a baking treatment temperature of 600°° C. to 1000° C., which contains a mixture of pseudo-tetragonal aluminum borate and silica, and contains crystals of pseudo-tetragonal aluminum borate composed of constituent elements including Al, B and O, and in which the crystalline phase is surrounded by the amorphous material.
A grain-oriented electrical steel sheet, comprising
- a base material of a grain-oriented electrical steel sheet, and
- an insulation coating provided on the base material of the grain-oriented electrical steel sheet by a baking treatment at a baking treatment temperature of 600°° C. to 1000°° C., which contains a mixture of pseudo-tetragonal aluminum borate and silica, and contains crystals of pseudo-tetragonal aluminum borate comprising constituent elements including Al, B and O, and in which the crystalline phase is surrounded by the amorphous material.
Dependencies are inferred from the claim text.