Directionally solidified ductile magnetic alloys magnetically ha

Details Directionally solidified ductile magnetic alloys magnetically ha Directionally solidified ductile magnetic alloys magnetically ha

1977-11-09

1980-06-17

Rutledge, L. Dewayne

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148 3157, 148103, C04B 3500, H01F 104

Patent

active

042082250

ABSTRACT:
Magnetic alloys of a ternary composition as defined within the region A, B, C, D of the ternary diagram of FIG. 5, wherein X is one or more metals selected from the group which consists of iron, nickel, aluminum, copper, molybdenum and manganese, are cast and rendered ductile by the formation within the material during solidification of at least two phases. One of the phases is preferably ductile and formed essentially of fibers or dendrites of Co and the other phase or phases are from those normally found in rare-earth/cobalt magnets. The alloy is magnetically hardened by precipitation hardening.

REFERENCES:
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patent: 3682715 (1972-08-01), Martin
patent: 3790414 (1974-02-01), Tawara et al.
patent: 3998669 (1976-12-01), Strnat
patent: 4047982 (1977-09-01), Sagawa et al.
Chin et al., ". . . Solidification of Co--Cu--R . . . Alloys", IEEE, Trans. Mag. 8, 1972, p. 29.
Nagel et al., ". . . Microstructure of Sm(Co,Cu).sub.2. . . ", J. Appl. Phys., 47 (1976) 2662.
Nagel et al., "Hard Magnetic Properties . . . ", IEEE, Trans. Mag. 12 (1976) 959.
Colin et al., "Directional Freezing . . . Co--Cu--R. . .," Cobalt, 1975, p. A-27.
Menth et al., "Bulk-Hardened . . . 2:17 Magnets", Appl. Phys. Letts. 29 (1976), 270.
Glardon et al., ". . . Directionally Solidified . . . Co.sub.17 Sm.sub.2. . .", J. Mat. Sc. 12 (1977), 658.
Nesbitt et al., "Cast . . . Magnets of the Co.sub.5 RE Type . . . ", J. Appl. Phys. 42 (1971), 1530.
Takata, ". . . Microstructures . . . MM--Cu--Co . . . Alloys", Cobalt Abs. 1973, p. 65.

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