Amorphous magnetic material and magnetic core using the same

Details Amorphous magnetic material and magnetic core using the same Amorphous magnetic material and magnetic core using the same

1998-06-24

1999-12-21

Evans, Elizabeth

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Including components having same physical characteristic in...

428606, 428692, 428694T, 420435, 420440, 148403, 148408, 148425, B32B 702

Patent

active

060046619

ABSTRACT:
An amorphous magnetic material possesses a composition essentially expressed by (Fe.sub.1-a-b N.sub.a M.sub.b).sub.100-x-y Si.sub.x B.sub.y (M denotes at least one kind of element selected from Mn, Cr, Co, Nb, V, Mo, Ta, W and Zr, 0.395.ltoreq.a.ltoreq.0.7, 0.ltoreq.b.ltoreq.0.21, 1-a-b<a, 6.ltoreq.x.ltoreq.18 at %, 10.ltoreq.y.ltoreq.18 at %, respectively). An amorphous magnetic material which has such a Ni rich Fe-Ni base possesses a Curie temperature T.sub.c of 473 to 573K, the maximum magnetic flux density B.sub.m of 0.5 to 0.9T. A ratio of residual magnetic flux density B.sub.r and the maximum magnetic flux density B.sub.m can be controlled according to a required characteristics, and, in the case of being used in a saturable core, is set at 0.60 or more. With an amorphous magnetic material of an inexpensive Fe-Ni base, magnetic characteristics applicable in a high frequency region, thermal stability, surface smoothness can be realized.

REFERENCES:
patent: 4473417 (1984-09-01), Inomata et al.
patent: 5470646 (1995-11-01), Okamura et al.
patent: 5804282 (1998-09-01), Watanabe et al.

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