Method of increasing magnetostrictive response of rare earth-iron alloy rods

Patent · Tue Apr 04 00:00:00 EDT 1989

OSTI ID:866902

Verhoeven, John D ^[1]; McMasters, O Dale ^[1]; Gibson, Edwin D ^[1]; Ostenson, Jerome E ^[1]; Finnemore, Douglas K ^[1]

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1. Ames, IA

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.

• Research Organization: Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
• DOE Contract Number: W-7405-ENG-82
• Assignee: Iowa State University Research Foundation, Inc. (Ames, IA)
• Patent Number(s): US 4818304
• Application Number: 07/110,974
• OSTI ID: 866902
• Country of Publication: United States
• Language: English

Related Subjects

method
increasing
magnetostrictive
response
rare
earth-iron
alloy
rods
comprises
rfe
thermal-magnetic
treatment
rod
heated
temperature
curie
viz
400
degree
600
magnetic
field
directionally
applied
maintained
cooled
below
magnetostrictive alloy
rare earth-iron
curie temperature
magnetic field
rare earth
alloy rods
earth-iron alloy
magnetostrictive response
increasing magnetostrictive
iron alloy
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