Method for preparation of permanent magnet
A blended powder including a first powder containing an R 2 T 14 B phase as a main phase, and a second powder containing an R 2 T 17 phase at 25 wt % or more of the whole is prepared. Herein, R is at least one element selected from the group consisting of all rare-earth elements and Y (yttrium), T i...
Saved in:
Main Authors | , |
---|---|
Format | Patent |
Language | English |
Published |
18.03.2004
|
Online Access | Get full text |
Cover
Loading…
Summary: | A blended powder including a first powder containing an R
2
T
14
B phase as a main phase, and a second powder containing an R
2
T
17
phase at 25 wt % or more of the whole is prepared. Herein, R is at least one element selected from the group consisting of all rare-earth elements and Y (yttrium), T is at least one element selected from the group consisting of all transition elements, and Q is at least one element selected from the group consisting of B (boron) and C (carbon). The blended powder is sintered, so as to manufacture a permanent magnet having a structure in which a rare-earth element included in the second powder is concentrated in a grain surgace region of a main phase. |
---|