Effects of the Gas-Atomization Pressure and Annealing Temperature on the Microstructure and Performance of FeSiBCuNb Nanocrystalline Soft Magnetic Composites
FeSiBCuNb powders prepared by the gas atomization method generally exhibit a wide particle size distribution and a high degree of sphericity. In addition, the correspondingly prepared nanocrystalline soft magnetic composites (NSMCs) perform good service stability. In this paper, effects of the gas-a...
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| author | Guanzhi Li Guibing Shi Hongyi Miao Dan Liu Zongzhen Li Mingxu Wang Li Wang |
| author_facet | Guanzhi Li Guibing Shi Hongyi Miao Dan Liu Zongzhen Li Mingxu Wang Li Wang |
| author_sort | Guanzhi Li |
| collection | DOAJ |
| description | FeSiBCuNb powders prepared by the gas atomization method generally exhibit a wide particle size distribution and a high degree of sphericity. In addition, the correspondingly prepared nanocrystalline soft magnetic composites (NSMCs) perform good service stability. In this paper, effects of the gas-atomization pressure and annealing temperature on the microstructure and soft magnetic properties of FeSiBCuNb powders and NSMCs are investigated. The results show that the powders obtained by a higher gas-atomization pressure possess a larger amorphous ratio and a smaller average crystallite size, which contribute to the better soft magnetic performance of the NSMCs. After being annealed at 550 °C for 60 min, the NSMCs show a much better performance than those treated by the stress-relief annealing process under 300 °C, which indicates that the optimization of the soft magnetic properties resulting from the precipitation of the α-Fe(Si) nanocrystalline largely overwhelms the deterioration caused by the grain growth of the pre-existing crystals. In addition, the annealed NSMCs prepared by the powders with the gas-atomization pressure of 4 MPa show the best performance in this work, <i>μ</i><sub>e</sub> = 33.32 (<i>f</i> = 100 kHz), <i>H</i><sub>c</sub> = 73.08 A/m and <i>P</i><sub>cv</sub> = 33.242 mW/cm<sup>3</sup> (<i>f</i> = 100 kHz, <i>B</i><sub>m</sub> = 20 mT, sine wave). |
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| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T09:35:52Z |
| publishDate | 2023-02-01 |
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| series | Materials |
| spelling | doaj.art-bf62aecbeb744451935708166b68e7c52023-11-16T17:19:44ZengMDPI AGMaterials1996-19442023-02-01163128410.3390/ma16031284Effects of the Gas-Atomization Pressure and Annealing Temperature on the Microstructure and Performance of FeSiBCuNb Nanocrystalline Soft Magnetic CompositesGuanzhi Li0Guibing Shi1Hongyi Miao2Dan Liu3Zongzhen Li4Mingxu Wang5Li Wang6School of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, ChinaSchool of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, ChinaSchool of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, ChinaWeihai Wanfeng Magnesium Industry Science and Technology Development Co., Ltd., Weihai 263200, ChinaJiangsu JITRI Advanced Energy & Materials Research Institute Co., Ltd., Changzhou 213000, ChinaSchool of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, ChinaSchool of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, ChinaFeSiBCuNb powders prepared by the gas atomization method generally exhibit a wide particle size distribution and a high degree of sphericity. In addition, the correspondingly prepared nanocrystalline soft magnetic composites (NSMCs) perform good service stability. In this paper, effects of the gas-atomization pressure and annealing temperature on the microstructure and soft magnetic properties of FeSiBCuNb powders and NSMCs are investigated. The results show that the powders obtained by a higher gas-atomization pressure possess a larger amorphous ratio and a smaller average crystallite size, which contribute to the better soft magnetic performance of the NSMCs. After being annealed at 550 °C for 60 min, the NSMCs show a much better performance than those treated by the stress-relief annealing process under 300 °C, which indicates that the optimization of the soft magnetic properties resulting from the precipitation of the α-Fe(Si) nanocrystalline largely overwhelms the deterioration caused by the grain growth of the pre-existing crystals. In addition, the annealed NSMCs prepared by the powders with the gas-atomization pressure of 4 MPa show the best performance in this work, <i>μ</i><sub>e</sub> = 33.32 (<i>f</i> = 100 kHz), <i>H</i><sub>c</sub> = 73.08 A/m and <i>P</i><sub>cv</sub> = 33.242 mW/cm<sup>3</sup> (<i>f</i> = 100 kHz, <i>B</i><sub>m</sub> = 20 mT, sine wave).https://www.mdpi.com/1996-1944/16/3/1284gas atomizationnanocrystalline soft magnetic powderssoft magnetic compositesstress relief |
| spellingShingle | Guanzhi Li Guibing Shi Hongyi Miao Dan Liu Zongzhen Li Mingxu Wang Li Wang Effects of the Gas-Atomization Pressure and Annealing Temperature on the Microstructure and Performance of FeSiBCuNb Nanocrystalline Soft Magnetic Composites Materials gas atomization nanocrystalline soft magnetic powders soft magnetic composites stress relief |
| title | Effects of the Gas-Atomization Pressure and Annealing Temperature on the Microstructure and Performance of FeSiBCuNb Nanocrystalline Soft Magnetic Composites |
| title_full | Effects of the Gas-Atomization Pressure and Annealing Temperature on the Microstructure and Performance of FeSiBCuNb Nanocrystalline Soft Magnetic Composites |
| title_fullStr | Effects of the Gas-Atomization Pressure and Annealing Temperature on the Microstructure and Performance of FeSiBCuNb Nanocrystalline Soft Magnetic Composites |
| title_full_unstemmed | Effects of the Gas-Atomization Pressure and Annealing Temperature on the Microstructure and Performance of FeSiBCuNb Nanocrystalline Soft Magnetic Composites |
| title_short | Effects of the Gas-Atomization Pressure and Annealing Temperature on the Microstructure and Performance of FeSiBCuNb Nanocrystalline Soft Magnetic Composites |
| title_sort | effects of the gas atomization pressure and annealing temperature on the microstructure and performance of fesibcunb nanocrystalline soft magnetic composites |
| topic | gas atomization nanocrystalline soft magnetic powders soft magnetic composites stress relief |
| url | https://www.mdpi.com/1996-1944/16/3/1284 |
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