Method of forming magnetostrictive rods from rare earth-iron alloys
Abstract
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.
- Inventors:
-
- Ames, IA
- Issue Date:
- Research Org.:
- Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
- OSTI Identifier:
- 865970
- Patent Number(s):
- 4609402
- Application Number:
- 06/792,341
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
- DOE Contract Number:
- W-7405-ENG-82
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; forming; magnetostrictive; rods; rare; earth-iron; 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; magnetostrictive rods; /75/
Citation Formats
McMasters, O Dale. Method of forming magnetostrictive rods from rare earth-iron alloys. United States: N. p., 1986.
Web.
McMasters, O Dale. Method of forming magnetostrictive rods from rare earth-iron alloys. United States.
McMasters, O Dale. Tue .
"Method of forming magnetostrictive rods from rare earth-iron alloys". United States. https://www.osti.gov/servlets/purl/865970.
@article{osti_865970,
title = {Method of forming magnetostrictive rods from rare earth-iron alloys},
author = {McMasters, O Dale},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {9}
}
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