Soft Magnetic Properties of Fe-based Amorphous Powder Cores with Fe71.2+x(C, Si, B, P)24.5(Cr, Al)4.3-x Compositions Fabricated by Spark Plasma Sintering

カテゴリ：研究会(論文単位)

論文No：MAG25131,LD25096

グループ名：【A】基礎・材料・共通部門 マグネティックス/【D】産業応用部門 リニアドライブ合同研究会

発行日：2025/11/28

タイトル(英語)：Soft Magnetic Properties of Fe-based Amorphous Powder Cores with Fe71.2+x(C, Si, B, P)24.5(Cr, Al)4.3-x Compositions Fabricated by Spark Plasma Sintering

著者名：尹 己烈(追手門学院大学),Nam Hyungjin(Kyungpook Univ.),Lee Jaewon(Kyungpook Univ.),Kim Seongjun(Kyungpook Univ.),Sohn InJoon(Kyungpook Univ.),Yi Seonghoon (Kyungpook Univ.)

著者名(英語)： KYYOUL YUN(Otemon Gakuin Univ.),Hyungjin Nam(Kyungpook Univ.),Jaewon Lee(Kyungpook Univ.),Seongjun Kim(Kyungpook Univ.),InJoon Sohn(Kyungpook Univ.),Seonghoon Yi(Kyungpook Univ.)

キーワード：soft magnetic materials,spark plasma sintering,amorphous materials

要約(日本語)：In this study, Fe71.2+x(C, Si, B, P)24.5(Cr, Al)4.3–x (x = 0, 2.3) amorphous alloys were used to fabricate amorphous powder cores, and their magnetic, mechanical, and corrosion properties were evaluated. Arc melting yielded the alloys, which were then prepared into amorphous ribbons using the rapid cooling process of melt spinning, followed by crushing into powder. The uncoated and SiO2 coated powders were sintered into toroidal shapes, and their properties were compared before and after the coating process. The x = 0 composition suppressed crystallization during the sintering process due to its high glass-forming ability, yielding a higher density than the x = 2.3 composition owing to high plastic deformation. Although SiO₂ coating increased hysteresis loss, eddy current loss decreased at high frequencies, reducing core loss. x = 0 composition exhibited higher corrosion resistance whereas x = 2.3 composition exhibited better magnetic properties, such as saturation magnetization and permeability.

要約(英語)：In this study, Fe71.2+x(C, Si, B, P)24.5(Cr, Al)4.3–x (x = 0, 2.3) amorphous alloys were used to fabricate amorphous powder cores, and their magnetic, mechanical, and corrosion properties were evaluated. Arc melting yielded the alloys, which were then prepared into amorphous ribbons using the rapid cooling process of melt spinning, followed by crushing into powder. The uncoated and SiO2 coated powders were sintered into toroidal shapes, and their properties were compared before and after the coating process. The x = 0 composition suppressed crystallization during the sintering process due to its high glass-forming ability, yielding a higher density than the x = 2.3 composition owing to high plastic deformation. Although SiO₂ coating increased hysteresis loss, eddy current loss decreased at high frequencies, reducing core loss. x = 0 composition exhibited higher corrosion resistance whereas x = 2.3 composition exhibited better magnetic properties, such as saturation magnetization and permeability.

本誌：2025年12月1日-2025年12月2日マグネティックス/リニアドライブ合同研究会-2

本誌掲載ページ：1-2p

原稿種別：英語

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