Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Patent
1987-10-20
1989-04-04
Sheehan, John P.
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
148108, H01F 102
Patent
active
048183040
ABSTRACT:
This invention comprises a method of increasing the magnetostrictive response of rare earth-iron (RFe) magnetostrictive alloy rods by a thermal-magnetic treatment. The rod is heated to a temperature above its Curie temperature, viz. from 400.degree. to 600.degree. C.; and, while the rod is at that temperature, a magnetic field is directionally applied and maintained while the rod is cooled, at least below its Curie temperature.
REFERENCES:
patent: 4152178 (1979-05-01), Malekzadeh et al.
patent: 4274888 (1981-06-01), Schnurbus et al.
Verhoeven, J. D., Gibson, E. D., McMasters, O. D., Baker, H. H., "The Growth of Single Crystol Terfenol-D Crystals", Met. Trans., 118A:223-231 (1987).
Finnemore Douglas K.
Gibson Edwin D.
McMasters O. Dale
Ostenson Jerome E.
Verhoeven John D.
Iowa State University & Research Foundation, Inc.
Sheehan John P.
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