| 학회 |
한국재료학회 |
| 학술대회 |
2018년 봄 (05/16 ~ 05/18, 삼척 쏠비치 호텔&리조트) |
| 권호 |
24권 1호 |
| 발표분야 |
B. 나노화학/바이오 분과 |
| 제목 |
Novel powder processing for rare-earth free MnBi permanent magnets |
| 초록 |
The effect of microstructure and magnetic properties of nanostructural MnBi permanent magnets has been investigated. The rare-earth free permanent magnets MnBi magnets have attracted recent attention for its remarkable maximum energy product and strong magneticcrystalline anisotropy and positive temperature coefficient of coercivity. MnBi magnets have been fabricated by many classical method, so-called top-down processes, i.e. ingot casting or arc-melting to micro-sized crushed powder with long-period preparation processes. In this presentation, a 'Bottom-up' fabrication method for MnBi and its advantages for industrial applications will be discussed. With this bottom-up process, a high content of the low-temperature-phase(LTP) was obtained and an enhanced properties of MnBi were confirmed. The maximum energy product, (BH)max of MnBi synthesized via bottom-up process was about 8.0 MGOe, which is meaningful for permanent magnet applications. A optimization process of MnBi powder bottom-up process will be emphasized. |
| 저자 |
김종우, 신용호, 안철우, 최종진, 한병동, 황건태, 민유호, 윤운하, 박동수
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| 소속 |
재료(연) |
| 키워드 |
Permanent magnet; MnBi; bottom-up process
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| E-Mail |
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