Method of forming magnetostrictive rods from rare earth-iron alloys
- Ames, IA
Rods of magnetrostructive alloys of iron with rare earth elements are formed by flowing a body of rare earth-iron alloy in a crucible enclosed in a chamber maintained under an inert gas atmosphere, forcing such molten rare-earth-iron alloy into a hollow mold tube of refractory material positioned with its lower end portion within the molten body by means of a pressure differential between the chamber and mold tube and maintaining a portion of the molten alloy in the crucible extending to a level above the lower end of the mold tube so that solid particles of higher melting impurities present in the alloy collect at the surface of the molten body and remain within the crucible as the rod is formed in the mold tube.
- 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 4609402
- Application Number:
- 06/792,341
- OSTI ID:
- 865970
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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rods
rare
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alloys
magnetrostructive
iron
earth
elements
formed
flowing
alloy
crucible
enclosed
chamber
maintained
inert
gas
atmosphere
forcing
molten
rare-earth-iron
hollow
mold
tube
refractory
material
positioned
portion
means
pressure
differential
maintaining
extending
level
solid
particles
melting
impurities
collect
surface
remain
rod
molten alloy
earth elements
rare earth-iron
refractory material
solid particles
rare earth
inert gas
pressure differential
gas atmosphere
earth element
solid particle
earth-iron alloys
earth-iron alloy
chamber maintained
material positioned
forming magnet
iron alloys
iron alloy
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