| 摘要 |
<p>A process that comprises a step in which an RH diffusion source and a sintered R-T-B magnet object are alternately placed through a flat-shaped holding member having openings to form a stack, a step in which the stack is placed in a treatment vessel, a step (A) in which an RH supply/diffusion treatment is conducted at an internal pressure of the treatment vessel of 2.0-50 Pa and an internal temperature thereof of 800-950ºC, and a step (B) in which an RH diffusion treatment is conducted at an internal pressure of the treatment vessel of 150 Pa to 2 kPa and an internal temperature thereof of 800-950ºC, and that includes a step in which the step (A) and the step (B) are alternately repeated twice or more.</p> |
