Grain oriented silicon steel sheet having excellent primary film

Details Grain oriented silicon steel sheet having excellent primary film Grain oriented silicon steel sheet having excellent primary film

1992-07-10

1996-10-15

Robinson, Ellis

Stock material or miscellaneous articles

Composite

Of quartz or glass

428409, 428469, 428472, 4284721, 428697, 428702, 428704, 148110, 148113, 148308, 148309, B32B 1504

Patent

active

055652727

ABSTRACT:
A grain oriented silicon steel sheet having excellent primary glass film property and magnetic property, comprising 2.0 to 5.0% by weight of Si, wherein a primary glass film formed during secondary recrystallization annealing is composed mainly of forsterite (Mg.sub.2 SiO.sub.4) and an oxide containing Al, mainly of spinel (MgAl.sub.2 O.sub.4), or Al and Si, mainly of cordierite (MgO.sub.2 Al.sub.4 Si.sub.5 O.sub.18) and/or sapphirine (Mg.sub.4 Al.sub.10 Si.sub.2 O.sub.23), and in an analysis of the surface of the steel sheet by glow discharge optical emission spectrometry analysis (GDS analysis), a peak derived from Al is separated from a peak derived from Mg, and, preferably, the peak derived from Al is separated from the peak derived from Mg and the distance (time) from the surface of the steel sheet at which the peak derived from Al is 1.2 times or more the distance from the surface of the steel sheet at which the peak derived from Mg appears.

REFERENCES:
patent: 3856568 (1974-12-01), Tanaka
patent: 4160681 (1979-07-01), Miller, Jr.
patent: 4287006 (1981-09-01), Hiromae
patent: 4655854 (1987-04-01), Nishiike
patent: 4698272 (1987-10-01), Inokuti
patent: 4713123 (1987-12-01), Inokuti
patent: 4897131 (1990-01-01), Wada
patent: 4906530 (1990-03-01), Nishiike
Patent Abstract of Japan, vol. 10, No. 184, (E-415) (2240) Jun. 27, 1986.
Patent Abstracts of Japan, vol. 10, No. 99, (E-396) (2156) Nov. 29, 1985.
Journal of Applied Physics, vol. 57, No. 8, Apr., 1985, pp. 4214-4216, "The Effect of Forsterite Film . . . ,", T. Konno et al. European Search Report EP 92 11 1694.

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