MATERIAL FOR MAGNETIC ANISOTROPIC MAGNET
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United States of America Patent
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Issued Date -
Sep 3, 2009
app pub date -
Feb 25, 2009
filing date -
Feb 29, 2008
priority date (Note) -
Abandoned
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Abstract
A material for magnetic anisotropic magnet, comprising (1) a Pr-T-B—Ga-based composition containing Pr: 13.0 to 15.0 atomic percent, B: 4.5 to 6.5 atomic percent, Ga: 0.1 to 0.7 atomic percent, and the balance of. T and inevitable impurities, wherein T is obtained by substituting Co for Fe or a portion of Fe, (2) the material for magnetic anisotropic magnet is obtained by rapidly-cooling a molten alloy having the composition, pulverizing the ribbon obtained by the rapid-cooling, cold-forming the alloy powder obtained by the pulverizing, hot-forming the cold-formed body, and performing hot plastic working to the hot-formed body, and (3) the degree of magnetic orientation of the material for magnetic anisotropic magnet, which is defined by remanence (Br)/saturation magnetic flux density (Js), is 0.9 or more.
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