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Microstructural and magnetic properties of low-energy ball milled LTP-MnBi powders via melt-spinning and gas-atomization
- Authors
- Kang, Minkyu; Kim, Jongryoul
- Issue Date
- May-2023
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- gas-atomization; low-energy ball milling; LTP-MnBi; permanent magnet
- Citation
- 2023 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers), pp 1 - 2
- Pages
- 2
- Indexed
- SCOPUS
- Journal Title
- 2023 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers)
- Start Page
- 1
- End Page
- 2
- ISSN
- 0000-0000
- Abstract
- LTP-MnBi alloy presents many possibilities as a 'gap-magnet' material due to its excellent magnetic properties compared to M-type ferrite. However, the LTP-MnBi alloy has a critical problem of the phase decomposition in a milling process for improving magnetic properties. In this study, the MnBi alloy was manufactured by both the melt-spinning process and the gas-atomization process to overcome the above problem. As a result, it was confirmed that single-phase LTP-MnBi powders were obtained through heat treatment even in gas-atomization with a relatively low cooling rate. In addition, these MnBi powders had a spherical shape of about 20 μm or less even before milling. Thus, it was possible to minimize the decomposition of the LTP-MnBi phase. These powders showed an excellent maximum energy product (11.3 MGOe). © 2023 IEEE.
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Related Researcher
- Kim, Jong ryoul
- ERICA 공학대학 (DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING)