High-Frequency Magnetic Properties of Novel Sm-Mo-Fe Phosphate-Coated Fe-X (X = Ni and Mn) Magnetic Powder Cores
In this study, we developed a new magnetic powder core using Fe- X powders, which has a coercivity of less than 80 A/m and a saturation magnetization comparable to that of pure iron powders. Fe- X powders doped with 4 at% nickel and 0.1 at% manganese were fabricated by the reduction of Ni-Mn doped f...
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| Veröffentlicht in: | IEEE transactions on magnetics 2023-11, Vol.59 (11), p.1-1 |
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| creator | Okazaki, Ryoya Nishitsuji, Jun Abe, Satoshi Akamatsu, Jun Imaoka, Nobuyoshi Kume, Michiya Kawakami, Yoshinaka Hosokawa, Hiroyuki Ozaki, Kimihiro |
| description | In this study, we developed a new magnetic powder core using Fe- X powders, which has a coercivity of less than 80 A/m and a saturation magnetization comparable to that of pure iron powders. Fe- X powders doped with 4 at% nickel and 0.1 at% manganese were fabricated by the reduction of Ni-Mn doped ferrite (Fe 0.959 Ni 0.04 Mn 0.001 ) 3 O 4 nanopowders with hydrogen gas at 1323 K. The magnetic powder cores were prepared from Fe- X powders coated with the novel phosphate insulators developed using rare earth and transition metals. The as-produced insulator was more thermal stability than conventional phosphate insulators and maintained its properties even after annealing at 873 K. After annealing, the Sm-Mo-Fe phosphate insulating layer separated into a samarium-rich and transition-metal-rich layer. The magnetic powder core of Fe- X ( X = Ni and Mn) powders coated with the Sm-Mo-Fe phosphate insulator, compacted at 1.47 GPa with heat treatment at 793 K, having a density of 7.62 Mg/m 3 , and exhibited magnetic flux density at 10 kA/m of 1.66 T. Iron loss W 10/400 ( B max = 1T, f = 400 Hz) was 38 W/kg and W 0.5/20k ( B max = 0.05 T, f = 20 kHz) was 43 W/kg. |
| doi_str_mv | 10.1109/TMAG.2023.3291373 |
| format | Article |
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Fe- X powders doped with 4 at% nickel and 0.1 at% manganese were fabricated by the reduction of Ni-Mn doped ferrite (Fe 0.959 Ni 0.04 Mn 0.001 ) 3 O 4 nanopowders with hydrogen gas at 1323 K. The magnetic powder cores were prepared from Fe- X powders coated with the novel phosphate insulators developed using rare earth and transition metals. The as-produced insulator was more thermal stability than conventional phosphate insulators and maintained its properties even after annealing at 873 K. After annealing, the Sm-Mo-Fe phosphate insulating layer separated into a samarium-rich and transition-metal-rich layer. The magnetic powder core of Fe- X ( X = Ni and Mn) powders coated with the Sm-Mo-Fe phosphate insulator, compacted at 1.47 GPa with heat treatment at 793 K, having a density of 7.62 Mg/m 3 , and exhibited magnetic flux density at 10 kA/m of 1.66 T. Iron loss W 10/400 ( B max = 1T, f = 400 Hz) was 38 W/kg and W 0.5/20k ( B max = 0.05 T, f = 20 kHz) was 43 W/kg.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/TMAG.2023.3291373</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Annealing ; Coercivity ; Core loss ; Fe-<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">X ; Flux density ; Heat treatment ; insulator ; Insulators ; Iron ; iron-based alloy ; Magnetic cores ; Magnetic flux ; magnetic powder core ; Magnetic properties ; Magnetic saturation ; Magnetism ; Manganese ; Molybdenum ; Nickel ; phosphate ; Powders ; Samarium ; Saturation magnetization ; soft magnetic powder ; Surface treatment ; Thermal stability ; Transition metals</subject><ispartof>IEEE transactions on magnetics, 2023-11, Vol.59 (11), p.1-1</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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Fe- X powders doped with 4 at% nickel and 0.1 at% manganese were fabricated by the reduction of Ni-Mn doped ferrite (Fe 0.959 Ni 0.04 Mn 0.001 ) 3 O 4 nanopowders with hydrogen gas at 1323 K. The magnetic powder cores were prepared from Fe- X powders coated with the novel phosphate insulators developed using rare earth and transition metals. The as-produced insulator was more thermal stability than conventional phosphate insulators and maintained its properties even after annealing at 873 K. After annealing, the Sm-Mo-Fe phosphate insulating layer separated into a samarium-rich and transition-metal-rich layer. The magnetic powder core of Fe- X ( X = Ni and Mn) powders coated with the Sm-Mo-Fe phosphate insulator, compacted at 1.47 GPa with heat treatment at 793 K, having a density of 7.62 Mg/m 3 , and exhibited magnetic flux density at 10 kA/m of 1.66 T. Iron loss W 10/400 ( B max = 1T, f = 400 Hz) was 38 W/kg and W 0.5/20k ( B max = 0.05 T, f = 20 kHz) was 43 W/kg.</description><subject>Annealing</subject><subject>Coercivity</subject><subject>Core loss</subject><subject>Fe-<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">X</subject><subject>Flux density</subject><subject>Heat treatment</subject><subject>insulator</subject><subject>Insulators</subject><subject>Iron</subject><subject>iron-based alloy</subject><subject>Magnetic cores</subject><subject>Magnetic flux</subject><subject>magnetic powder core</subject><subject>Magnetic properties</subject><subject>Magnetic saturation</subject><subject>Magnetism</subject><subject>Manganese</subject><subject>Molybdenum</subject><subject>Nickel</subject><subject>phosphate</subject><subject>Powders</subject><subject>Samarium</subject><subject>Saturation magnetization</subject><subject>soft magnetic powder</subject><subject>Surface treatment</subject><subject>Thermal stability</subject><subject>Transition metals</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpNkEFPwkAQhTdGExH9ASYeNvGih8Wd3XbbHjyYRsAEkERMuDXLdgol0K27RcO_twQOXGYyyXtv8j5C7oH3AHjyMhu_DXqCC9mTIgEZyQvSgSQAxrlKLkmHc4hZEqjgmtx4v27PIATeIfWwXK5Y3-HPDiuzp2O9rLApDZ06W6NrSvTUFnRif3FDv7ZsbFkf6XRlfb3SDbLUtjOnfWRz-jSnr3RSUl3ldFw9n2XZvxwdTa1Df0uuCr3xeHfaXfLdf5-lQzb6HHykbyNmRKAaZiDQqsiViZUsIgEYmxADmUMQC8wlSI1xHkYJGjDFYgFgVBGFhVYSFkZjIrvk8ZhbO9t28022tjtXtS8zEccQchHKuFXBUWWc9d5hkdWu3Gq3z4BnB7DZAWx2AJudwLaeh6OnRMQzPUSgQMh_GLtzCw</recordid><startdate>20231101</startdate><enddate>20231101</enddate><creator>Okazaki, Ryoya</creator><creator>Nishitsuji, Jun</creator><creator>Abe, Satoshi</creator><creator>Akamatsu, Jun</creator><creator>Imaoka, Nobuyoshi</creator><creator>Kume, Michiya</creator><creator>Kawakami, Yoshinaka</creator><creator>Hosokawa, Hiroyuki</creator><creator>Ozaki, Kimihiro</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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Fe- X powders doped with 4 at% nickel and 0.1 at% manganese were fabricated by the reduction of Ni-Mn doped ferrite (Fe 0.959 Ni 0.04 Mn 0.001 ) 3 O 4 nanopowders with hydrogen gas at 1323 K. The magnetic powder cores were prepared from Fe- X powders coated with the novel phosphate insulators developed using rare earth and transition metals. The as-produced insulator was more thermal stability than conventional phosphate insulators and maintained its properties even after annealing at 873 K. After annealing, the Sm-Mo-Fe phosphate insulating layer separated into a samarium-rich and transition-metal-rich layer. The magnetic powder core of Fe- X ( X = Ni and Mn) powders coated with the Sm-Mo-Fe phosphate insulator, compacted at 1.47 GPa with heat treatment at 793 K, having a density of 7.62 Mg/m 3 , and exhibited magnetic flux density at 10 kA/m of 1.66 T. Iron loss W 10/400 ( B max = 1T, f = 400 Hz) was 38 W/kg and W 0.5/20k ( B max = 0.05 T, f = 20 kHz) was 43 W/kg.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TMAG.2023.3291373</doi><tpages>1</tpages><orcidid>https://orcid.org/0009-0004-0916-9520</orcidid><orcidid>https://orcid.org/0009-0006-0933-2599</orcidid><orcidid>https://orcid.org/0000-0003-4580-0135</orcidid><orcidid>https://orcid.org/0009-0009-1805-3331</orcidid><orcidid>https://orcid.org/0000-0002-4589-4330</orcidid><orcidid>https://orcid.org/0000-0002-1090-7365</orcidid></addata></record> |
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| subjects | Annealing Coercivity Core loss Fe-<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">X Flux density Heat treatment insulator Insulators Iron iron-based alloy Magnetic cores Magnetic flux magnetic powder core Magnetic properties Magnetic saturation Magnetism Manganese Molybdenum Nickel phosphate Powders Samarium Saturation magnetization soft magnetic powder Surface treatment Thermal stability Transition metals |
| title | High-Frequency Magnetic Properties of Novel Sm-Mo-Fe Phosphate-Coated Fe-X (X = Ni and Mn) Magnetic Powder Cores |
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