Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Patent
1982-05-03
1983-07-05
Sheehan, John P.
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
148101, H01F 102
Patent
active
043916562
ABSTRACT:
To provide for an inexpensive magnet alloy, isotropic and nearly isotropic permanent magnet properties are developed in Fe-Mo-Ni alloys. Manufacture may be by a method which comprises steps of annealing, optional deforming by a limited amount, and aging.
Typical magnetic properties of alloys of the invention are a coercive force in the range of 50-500 oersted, a magnetic remanence in the range of 7000-14000 gauss, and a magnetic squareness ratio of less than 0.9. Alloys of the invention are highly ductile even after plastic deformation, they are readily bonded to aluminum supports (as used, e.g., in the manufacture of twistor memories), and they are readily etched by etchants which leave aluminum unaffected.
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Jin Sung-ho
Tiefel Thomas H.
Bell Telephone Laboratories Incorporated
Businger Peter A.
Sheehan John P.
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