Advances in materials Research

  • 제9권4호
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  • Pages.323-335
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  • 2020
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  • 2234-0912(pISSN)
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  • 2234-179X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Recent developments of manganese-aluminium as rare-earth-free magnets

  • 투고 : 2020.04.13
  • 심사 : 2020.12.18
  • 발행 : 2020.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

This article reviews findings and progresses in the past decade on manganese-aluminium (MnAl) based magnets as the interest has been revived to fulfill their potential as commercial magnets. The challenges in developments of these rare-earth-free magnets are to acquire a high remanence and coercivity from the ferromagnetic τ-phase in MnAl alloys. To this end, the phase transformation to this τ-MnAl with L10 body centered tetragonal structure has been promoted by a variety of methods and a few percents of carbon (C) is often added to prevent the phase decomposition. Magnetization and coercivity are not only influenced by the phase composition but also the microstructure. The fabrication processes and factors affecting the phase and microstructure are therefore covered. Finally, the productions of bulk MnAl magnets are addressed.

키워드

과제정보

This writing of this article is supported by Thailand Excellent Center in Physics under Grant number ThEP-60-PIP-WU3.

참고문헌

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