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Development of a High-Performance-Ferrite Magnet Fabrication Process without Sintering Additives
소결 첨가제 없는 고특성 페라이트 영구자석 공정 개발
Pyeong-Yeol Yu, Min-Ho Kim, Young-Min Kang
유평열, 김민호, 강영민
Korean J. Met. Mater. 2021;59(8):551-559.   Published online 2021 Jul 5
DOI: https://doi.org/10.3365/KJMM.2021.59.8.551

Sintered M-type hexaferrites with the chemical formula of Sr0.3Ca0.4La0.3Fe9.8Co0.2-xMnxSi0.135O19-d (x = 0, 0.05, 0.1, 0.2) and Sr0.3Ca0.4La0.3Fe9.8-yCo0.2MnySi0.135O19-d (y = 0.05, 0.1, 0.2) were prepared by conventional solid station reaction routes. A high sintering density of more than 95% of the theoretical density was achieved in all hexaferrite samples when calcination..... More

Soft Magnetic Properties of Fe-based Amorphous/Nanocrystalline Hybrid Materials
철계 비정질/나노 결정 하이브리드 소재의 연자성 특성
Yeonjoo Lee, Jonggyu Jeon, Teasuk Jang, Minwoo Lee, Yongjin Kim, Dongyeol Yang, Mijung Lee, Hyunjoo Choi
이연주, 전종규, 장태석, 이민우, 김용진, 양동열, 이미정, 최현주
Korean J. Met. Mater. 2017;55(5):328-334.   Published online 2017 May 9
DOI: https://doi.org/10.3365/KJMM.2017.55.5.328

In this study, the effect of the crystalline structure on the magnetic properties of Fe-based amorphous powder is investigated. The Fe-B-P-C-Nb-Hf amorphous powder with excellent soft magnetic properties is prepared via gas-atomization, and the atomized amorphous powder is annealed in order to generate a small amount of nanosized crystallites in..... More

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