Method for preparation of permanent magnet
214217 A blended powder including a first powder containing an RTB phase as a main phase, and a second powder containing an RTphase 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 le...
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| Main Authors | , |
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| Format | Patent |
| Language | English |
| Published |
17.07.2007
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| Online Access | Get full text |
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| Summary: | 214217 A blended powder including a first powder containing an RTB phase as a main phase, and a second powder containing an RTphase 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. |
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