Amorphous alloy for use as a core

Details Amorphous alloy for use as a core Amorphous alloy for use as a core

1982-03-05

1984-03-20

Sheehan, John P.

Metal treatment

Compositions

Heat treating

148121, 148108, 75123B, 75123L, H01F 104

Patent

active

044379072

ABSTRACT:
Amorphous alloys have attractive properties which make possible their use as cores for transformers, these properties being a low watt loss, which is due to an inherently low magnetic anisotropy, and a high resistivity. However, one of the most serious disadvantages of amorphous alloys is the low thermal stability of the magnetic properties and the fact that their magnetic properties, such as saturation flux density (Bs), decrease at the temperature of the energized or excited core.
In order to eliminate the disadvantages of the known amorphous alloys, the present invention proposes an amorphous alloy having a composition of Fe.sub.74-80 Si.sub.8-19 B.sub.6-13 C.sub.0-3.5. This alloy is specifically adapted so that it can be used as a transformer core which can be energized or excited at a high flux density.

REFERENCES:
patent: 3856513 (1974-12-01), Chen et al.
patent: 4219355 (1980-08-01), DeCristofaro et al.
patent: 4268325 (1981-05-01), O'Handley et al.

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