Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Vacuum or hermetically sealed type
Patent
1982-04-01
1983-03-22
Sheehan, John P.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Vacuum or hermetically sealed type
335151, 335154, 148 3155, 148 3157, H01H 166
Patent
active
043777970
ABSTRACT:
Magnetically actuated devices such as, e.g., switches and synchronizers typically comprise a magnetically semihard component having a square B-H hysteresis loop and high remanent induction. Among alloys having such properties are Co-Fe-V, Co-Fe-Nb, and Co-Fe-Ni-Al-Ti alloys which, however, contain undesirably large amounts of cobalt.
According to the invention, devices are equipped with a magnetically semihard, high-remanence Fe-Mo-Ni alloy which comprises Mo in a preferred amount in the range of 2-26 weight percent and Ni in a preferred amount in the range of 0.5-15 weight percent.
Magnets made from alloys of the invention may be shaped, e.g., by cold drawing, rolling, bending, or flattening and may be used in devices such as, e.g., electrical contact switches, hysteresis motors, and other magnetically actuated devices.
Preparation of alloys of the invention may be by a treatment of annealing and aging or deformation and aging.
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Jin Sung-ho
Tiefel Thomas H.
Bell Telephone Laboratories Incorporated
Businger Peter A.
Sheehan John P.
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