Method for making iron-metalloid amorphous alloys for electromag

Details Method for making iron-metalloid amorphous alloys for electromag Method for making iron-metalloid amorphous alloys for electromag

1980-03-25

1981-11-03

Rutledge, L. Dewayne

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148103, 148121, 148 3150, 148 3155, 148 3157, 75123B, 75123L, H21D 104

Patent

active

042984092

ABSTRACT:
An amorphous metal alloy which is at least 90 percent amorphous and consists essentially of a composition having the formula Fe.sub.a B.sub.b Si.sub.c C.sub.d wherein "a", "b", "c" and "d" are atomic percentages ranging from about 80.0 to 82.0, 12.5 to 14.5, 2.5 to 5.0 and 1.5 to 2.5, respectively, with the proviso that the sum of "a", "b", "c" and "d" equals 100, is annealed at a temperature ranging from 380.degree.-410.degree. C. The resulting alloy has decreased high frequency core losses and increased low field permeability; is particularly suited for high frequency applications.

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patent: 4116728 (1978-09-01), Becker et al.
patent: 4130447 (1978-12-01), Marianeschi et al.
patent: 4219355 (1980-08-01), DeCristofaro et al.
patent: 4249969 (1981-02-01), DeCristofaro et al.

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