RARE EARTH ELEMENT-IRON BASED MAGNET POWDER, PRODUCTION METHOD THEREFOR, AND RESIN COMPOSITION FOR BOND MAGNET AND BOND MAGNET OBTAINED BY USING THE ARE EARTH ELEMENT-IRON BASED MAGNET POWDER

摘要

PROBLEM TO BE SOLVED: To provide rare earth element-iron based magnet powder having excellent orientation properties by a magnetic field since angulation is not present on the surface and it is covered with a film of a phosphate, and also having excellent weatherability, and to provide a production method therefor.;SOLUTION: In the production method, while removing angulation on the surface of the magnet alloy powder by grinding organic solvent slurry containing (A) rare earth element-iron based alloy powder subjected to wet pulverization, in the presence of (B) phosphoric acid, a phosphate film is formed on the surface.;COPYRIGHT: (C)2005,JPO&NCIPI