| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing an R-T-B-based rare-earth permanent magnet for improving mass-productivity of a high performance R-T-B-besed rare-earth permanent magnet. <P>SOLUTION: The manufacturing method includes the steps of manufacturing an R-T-B alloy that is mainly formed of R<SB>2</SB>T<SB>14</SB>B phase with inclusion of Co, Zr, and Cu, and an R-T alloy that is mainly formed of R and T; obtaining a mixture formed of powder of R-T-B alloy and powder of R-T alloy; producing a mold of the predetermined shape formed of the mixture; and obtaining a sintered material by sintering the mold. In the step of obtaining the mixture, ≥50% Co included in the mixture is supplied from powder of the R-T-B alloy. <P>COPYRIGHT: (C)2007,JPO&INPIT |
