INSULATING COATING FILM FOR ELECTROMAGNETIC STEEL SHEET

WIPO Patent Application WO/2016/194520

A1

Provided is an insulating coating film for an electromagnetic steel sheet, the coating film being formed on a surface of a base material of an electromagnetic steel sheet, wherein the insulating coating film contains a phosphate of at least one type of polyvalent metal selected from among Al, Zn, Mg and Ca, a divalent metal-concentrated layer is present at the interface between the insulating coating film and the surface of the base material, and the increase in concentration of the divalent metal in the concentrated layer is not less than 0.01 g/m2 and less than 0.2 g/m2.

JP3253977	INDUSTRIAL APPLICABILITY: A method of applying an inorganic coating to an electric conductor.
JPS62164894	COLOR FORMING DEVICE FOR TITANIUM ALLOY
JP2772889	[Title of the Invention] Low iron loss directional electromagnetic steel sheet

YAMAZAKI SHUICHI (JP)
TAKAHASHI MASARU (JP)
TAKEDA KAZUTOSHI (JP)
FUJII HIROYASU (JP)
AKAGI AKIRA (JP)
HORI HIROKI (JP)

PCT/JP2016/062938

December 08, 2016

April 25, 2016

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NIPPON STEEL & SUMITOMO METAL CORP (JP)

C23C22/00; C21D9/46; C23C22/07; H01F1/18

JP2013249486A	2013-12-12
JPH11131250A	1999-05-18
JP2009155707A	2009-07-16
JP2010261063A	2010-11-18
JP2001107261A	2001-04-17

See also references of EP 3305942A4

BRIGHTAS IP ATTORNEYS (JP)
patent business corporation Bligh -- TASS (JP)

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