Fine grained anisotropic powder from melt-spun ribbons
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United States of America Patent
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May 24, 1994
Grant Date -
N/A
app pub date -
Jun 22, 1992
filing date -
Jun 22, 1992
priority date (Note) -
Expired
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Abstract
A method is disclosed for producing a rapidly solidified, fine grained, magnetically anisotropic powder of the RE-Fe-B type. The rapidly solidified material is optimally quenched or slightly overquenched and is subjected to a hydrogen absorption-hydrogen desorption process that produces a fine grained material containing the essential magnetic phase RE.sub.2 TM.sub.14 B and an intergranular phase and is magnetically anisotropic.
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