NiCoCrFeY High Entropy Alloy Nanopowders and Their Soft Magnetic Properties
High entropy alloy nanopowders were successfully prepared by liquid-phase reduction methods and their applications were preliminarily discussed. The prepared high entropy alloy nanopowders consisted of FeNi alloy spherical powders and NiFeCoCrY alloy spherical powders with a particle size of about 1...
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MDPI AG
2024-01-01
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| Online Access: | https://www.mdpi.com/1996-1944/17/2/534 |
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| author | Donghan Jiang Zhifen Yuan Zhenghou Zhu Mengke Yao |
| author_facet | Donghan Jiang Zhifen Yuan Zhenghou Zhu Mengke Yao |
| author_sort | Donghan Jiang |
| collection | DOAJ |
| description | High entropy alloy nanopowders were successfully prepared by liquid-phase reduction methods and their applications were preliminarily discussed. The prepared high entropy alloy nanopowders consisted of FeNi alloy spherical powders and NiFeCoCrY alloy spherical powders with a particle size of about 100 nm. The powders have soft magnetic properties, the saturation magnetization field strength were up to 5000 Qe and the saturation magnetization strength Ms was about 17.3 emu/g. The powders have the excellent property of low high-frequency loss in the frequency range of 0.3–8.5 GHz. When the thickness of the powders coating was 5 mm, the powders showed excellent absorption performance in the Ku band; and when the thickness of the powders coating was 10 mm; the powders showed good wave-absorbing performance in the X band. The powders have good moulding, and the powders have large specific surface area, so that the magnetic powder core composites could be prepared under low pressure and without coating insulators, and the magnetic powder cores showed excellent frequency-constant magnetization and magnetic field-constant magnetization characteristics. In the frequency range of 1~100 KHz; the μ<sub>m</sub> of the magnetic powder core heat-treated at 800 °C reached 359, the μ<sub>e</sub> was about 4.6 and the change rate of μ<sub>e</sub> with frequency was less than 1%, meanwhile; the magnetic powder core still maintains constant μ<sub>e</sub> value under the action of the external magnetic field from 0 to 12,000 A/m. The high entropy alloy nanopowders have a broad application prospect in soft magnetic composites. |
| first_indexed | 2024-03-08T10:42:40Z |
| format | Article |
| id | doaj.art-d12ca39e860e4121a2d1740994958d3d |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-08T10:42:40Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-d12ca39e860e4121a2d1740994958d3d2024-01-26T17:30:51ZengMDPI AGMaterials1996-19442024-01-0117253410.3390/ma17020534NiCoCrFeY High Entropy Alloy Nanopowders and Their Soft Magnetic PropertiesDonghan Jiang0Zhifen Yuan1Zhenghou Zhu2Mengke Yao3School of Physics and Material Science, Nanchang University, Nanchang 330031, ChinaSchool of Physics and Material Science, Nanchang University, Nanchang 330031, ChinaSchool of Physics and Material Science, Nanchang University, Nanchang 330031, ChinaSchool of Physics and Material Science, Nanchang University, Nanchang 330031, ChinaHigh entropy alloy nanopowders were successfully prepared by liquid-phase reduction methods and their applications were preliminarily discussed. The prepared high entropy alloy nanopowders consisted of FeNi alloy spherical powders and NiFeCoCrY alloy spherical powders with a particle size of about 100 nm. The powders have soft magnetic properties, the saturation magnetization field strength were up to 5000 Qe and the saturation magnetization strength Ms was about 17.3 emu/g. The powders have the excellent property of low high-frequency loss in the frequency range of 0.3–8.5 GHz. When the thickness of the powders coating was 5 mm, the powders showed excellent absorption performance in the Ku band; and when the thickness of the powders coating was 10 mm; the powders showed good wave-absorbing performance in the X band. The powders have good moulding, and the powders have large specific surface area, so that the magnetic powder core composites could be prepared under low pressure and without coating insulators, and the magnetic powder cores showed excellent frequency-constant magnetization and magnetic field-constant magnetization characteristics. In the frequency range of 1~100 KHz; the μ<sub>m</sub> of the magnetic powder core heat-treated at 800 °C reached 359, the μ<sub>e</sub> was about 4.6 and the change rate of μ<sub>e</sub> with frequency was less than 1%, meanwhile; the magnetic powder core still maintains constant μ<sub>e</sub> value under the action of the external magnetic field from 0 to 12,000 A/m. The high entropy alloy nanopowders have a broad application prospect in soft magnetic composites.https://www.mdpi.com/1996-1944/17/2/534high entropy alloysoft magnetic compositessoft magnetic properties |
| spellingShingle | Donghan Jiang Zhifen Yuan Zhenghou Zhu Mengke Yao NiCoCrFeY High Entropy Alloy Nanopowders and Their Soft Magnetic Properties Materials high entropy alloy soft magnetic composites soft magnetic properties |
| title | NiCoCrFeY High Entropy Alloy Nanopowders and Their Soft Magnetic Properties |
| title_full | NiCoCrFeY High Entropy Alloy Nanopowders and Their Soft Magnetic Properties |
| title_fullStr | NiCoCrFeY High Entropy Alloy Nanopowders and Their Soft Magnetic Properties |
| title_full_unstemmed | NiCoCrFeY High Entropy Alloy Nanopowders and Their Soft Magnetic Properties |
| title_short | NiCoCrFeY High Entropy Alloy Nanopowders and Their Soft Magnetic Properties |
| title_sort | nicocrfey high entropy alloy nanopowders and their soft magnetic properties |
| topic | high entropy alloy soft magnetic composites soft magnetic properties |
| url | https://www.mdpi.com/1996-1944/17/2/534 |
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