| 摘要 |
PURPOSE:To obtain alloy powder having excellent mechanical property of a green compact and being suitable to raw material for sintered magnet by heating the specific mixed material powder under non-oxidizing atmosphere, heating after executing wet treatment to reaction generating mixed material and finely pulverizing. CONSTITUTION:Rare earth metal oxide powder or this powder and rare earth metal powder, iron-containing powder, boron-containing powder and one or more kinds selected from alkali (earth) metal and these hydride, are mixed. This mixed material is heated at 900-1200 deg.C under non-oxidized atmosphere. The wet treatment for allowing the obtd. reaction generating mixed material to react with water and vacuum drying are executed. This powder is heated at 600-1100 deg.C and after cooling, this is finely pulverized to make the fine powder having 1-10mum average particle diameter. The obtd. rare earth metal-iron-boron series alloy powder is suitable to the sintered magnet. |
