| 摘要 |
PURPOSE:To obtain the magnet of high density having high magnetic characteristics by a method wherein a specific oxide is coated on a sintering case. CONSTITUTION:A molded body, obtained by press-molding rare-earth cobalt alloy powder, is placed in a sintering case. When said sintering case is retained in a sintering furnace and a sintering process is goint to be performed thereon, the inside surface of the sintering cas is coated by the oxide such as a rare-earth oxide (Y2O3) or MgO, CaO and the like by performing a coating, a flame spraying, or a vapor deposition method and the like. The molded body is placed in the sintering case, and a sintering treatment is performed. As a result, the baking reaction generating between the sintered body and the sintering case can be prevented. |
