| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable to manufacture a rare-earth permanent magnet excellent in magnetic characteristics such as residual magnetic flux density by improving orientation degree of a rare-earth alloy powder. <P>SOLUTION: A finely pulverized rare-earth alloy powder is molded in a magnetic field, and sintered. Prior to the magnetic molding, the finely pulverized rare-earth alloy powder is subjected to heat treatment. A heat treatment temperature is preferably 600°C-900°C. The rare-earth alloy powder subjected to heat treatment may be re-pulverized. The powder may be magnetized before the heat treatment. <P>COPYRIGHT: (C)2008,JPO&INPIT |
