NON-ORIENTED ELECTRICAL STEEL SHEET AND SURFACE TREATMENT AGENT FOR NON-ORIENTED ELECTRICAL STEEL SHEET
원문보기
IPC분류정보
국가/구분
United States(US) Patent
공개
국제특허분류(IPC7판)
C23C-022/20
C21D-009/46
출원번호
17761958
(2020-09-18)
공개번호
20220341043
(2022-10-27)
우선권정보
JP-2019-171251 (2019-09-20)
국제출원번호
PCT/JP2020/035519
(2020-09-18)
발명자
/ 주소
TAKEDA, Kazutoshi
YAMAZAKI, Shuichi
MATSUMOTO, Takuya
FUJII, Hiroyasu
TAKAHASHI, Masaru
출원인 / 주소
NIPPON STEEL CORPORATION
인용정보
피인용 횟수 :
0인용 특허 :
0
초록▼
There is provided a non-oriented electrical steel sheet that includes a base metal steel sheet and an insulating coating film that is formed on a surface of the base metal steel sheet, wherein the insulating coating film mainly contains metal phosphate, organic resin, and water-soluble organic compo
There is provided a non-oriented electrical steel sheet that includes a base metal steel sheet and an insulating coating film that is formed on a surface of the base metal steel sheet, wherein the insulating coating film mainly contains metal phosphate, organic resin, and water-soluble organic compound, the water-soluble organic compound has an SP value that is within a range of 10.0 to 20.0 (cal/cm3)1/2, the metal phosphate contains aluminum and zinc as metallic elements, and when measurement by an X-ray photoelectron spectroscopy is performed from a surface of the insulating coating film in a thickness direction of the non-oriented electrical steel sheet, a depth at which a strength of a 2p peak of zinc reaches a maximum is present closer to the surface side than a depth at which a strength of a 2p peak of aluminum reaches a maximum, and a maximum value of the strength of the 2p peak of zinc is 1 to 20 times a strength of the 2p peak of aluminum at the depth at which the strength of the 2p peak of zinc reaches a maximum.
대표청구항▼
1. A non-oriented electrical steel sheet comprising a base metal steel sheet and an insulating coating film that is formed on the base metal steel sheet, whereinthe insulating coating film contains metal phosphate, organic resin, and water-soluble organic compound at 50 mass % or more in total with
1. A non-oriented electrical steel sheet comprising a base metal steel sheet and an insulating coating film that is formed on the base metal steel sheet, whereinthe insulating coating film contains metal phosphate, organic resin, and water-soluble organic compound at 50 mass % or more in total with respect to a total mass of the insulating coating film,the water-soluble organic compound has an SP value that is within a range of 10.0 to 20.0 (cal/cm3)1/2,the metal phosphate contains aluminum and zinc as metallic elements, andwhen measurement by an X-ray photoelectron spectroscopy is performed from a surface of the insulating coating film in a thickness direction of the non-oriented electrical steel sheet,a depth at which a strength of a 2p peak of zinc reaches a maximum is present closer to the surface side than a depth at which a strength of a 2p peak of aluminum reaches a maximum, anda maximum value of the strength of the 2p peak of zinc is 1 to 20 times a strength of the 2p peak of aluminum at the depth at which the strength of the 2p peak of zinc reaches a maximum. 2. The non-oriented electrical steel sheet according to claim 1, wherein the insulating coating film contains, as the organic resin, 3 to 50 parts by weight of an acrylic resin per 100 parts by weight of the metal phosphate. 3. The non-oriented electrical steel sheet according to claim 1, wherein the metal phosphate further contains, as a metallic element, one or more types selected from the group of Co, Mg, Mn, and Ni. 4. A surface treatment agent for a non-oriented electrical steel sheet, the surface treatment agent for forming an insulating coating film on a surface of the non-oriented electrical steel sheet, the surface treatment agent comprising: 3 to 50 parts by weight of organic resin and 5 to 50 parts by weight of water-soluble organic compound per 100 parts by weight of metal phosphate containing aluminum and zinc, whereinthe water-soluble organic compound has an SP value that is within a range of 10.0 to 20.0 (cal/cm3)1/2, anda molar ratio between aluminum element and zinc element in the metal phosphate (Al:Zn) is within a range of 10:90 to 75:25. 5. The surface treatment agent for a non-oriented electrical steel sheet according to claim 4, wherein the organic resin is an acrylic resin. 6. The surface treatment agent for a non-oriented electrical steel sheet according to claim 4, further comprising a metal phosphate including one or more elements selected from the group of Co, Mg, Mn, and Ni. 7. The non-oriented electrical steel sheet according to claim 2, wherein the metal phosphate further contains, as a metallic element, one or more types selected from the group of Co, Mg, Mn, and Ni. 8. The surface treatment agent for a non-oriented electrical steel sheet according to claim 5, further comprising a metal phosphate including one or more elements selected from the group of Co, Mg, Mn, and Ni.
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