MANUFACTURING METHOD OF RARE-EARTH PERMANENT MAGNET

文件类型：PDF文档
文件大小：98K
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. 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. COPYRIGHT : (C)2008, JPO&INPIT