GRAIN ORIENTED ELECTROMAGNETIC STEEL SHEET HAVING EXCELLENT FILM ADHESION AND PROCESS FOR PRODUCING THE SAME

Title:

GRAIN ORIENTED ELECTROMAGNETIC STEEL SHEET HAVING EXCELLENT FILM ADHESION AND PROCESS FOR PRODUCING THE SAME

Document Type and Number:

WIPO Patent Application WO/2006/126660

Kind Code:

A1

Abstract:

This invention provides a grain oriented electromagnetic steel sheet that is excellent in film adhesion, particularly film picture frame separability. The grain oriented electromagnetic steel sheet having excellent film adhesion comprises by mass Si: 1.8 to 7% and has on its surface a primary film composed mainly of forsterite and is characterized in that the weight per unit area of one or at least two of Ce, La, Pr, Nd, Sc and Y in the primary film is 0.001 to 1000 mg/m² per one side, that the weight per unit area of Ti in the primary film is 1 to 800 mg/m² per one side, and that the weight per unit area of one or at least two of Sr, Ca and Ba in the primary film is 0.01 to 100 mg/m² per one side.

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Inventors:

NANBA EIICHI (JP)
KUBO YUUJI (JP)
TAKEDA KAZUTOSHI (JP)
ARAI SATOSHI (JP)
HONMA HOTAKA (JP)
MURAKAMI KENICHI (JP)
KOBAYASHI HIDEYUKI (JP)

Application Number:

PCT/JP2006/310509

Publication Date:

November 30, 2006

Filing Date:

May 19, 2006

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)
NANBA EIICHI (JP)
KUBO YUUJI (JP)
TAKEDA KAZUTOSHI (JP)
ARAI SATOSHI (JP)
HONMA HOTAKA (JP)
MURAKAMI KENICHI (JP)
KOBAYASHI HIDEYUKI (JP)

International Classes:

C21D8/12; C21D1/70; C22C38/00; C22C38/60; H01F1/16; H01F1/18

Foreign References:

JP2002302718A	2002-10-18
JPH06192743A	1994-07-12
JPH09256164A	1997-09-30
JPS5857916A	1983-04-06
JPS5328043B2	1978-08-11
JPS5652117B2	1981-12-10

Other References: