Alloy thin ribbon for rare earth magnet, production method of the same, and alloy for rare earth magnet
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United States of America Patent
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Oct 9, 2007
Grant Date -
Aug 9, 2007
app pub date -
Aug 22, 2005
filing date -
Aug 23, 2004
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Abstract
The present invention provides a rare earth magnet superior in magnetic properties and thermal stability. In an aspect of the present invention, a production method of an alloy thin ribbon for a rare earth magnet includes a step to obtain a quenched thin ribbon by feeding a molten alloy containing praseodymium (Pr), iron (Fe), cobalt (Co), titanium (Ti), boron (B), and silicon (Si) on a rotating roll and a step to apply heat treatment to the quenched thin ribbon at a heating rate within a range of 100.degree. to 150.degree. C./min to crystallize the quenched thin ribbon.
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