High-entropy alloys as magnetic shielding materials in low-frequency wireless power transmission
Soft magnetic materials are required to exhibit high saturation magnetization and low coercivity. Iron-based metal alloys, such as FeMnZn, are commonly used commercial soft magnetic materials with electromagnetic shielding functions. However, these alloys generally exhibit low saturation magnetizati...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Materials Today Advances |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590049824000778 |
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| author | Cheng-Hsien Yeh Chia-Hua Hu Hsuan-Ta Wu Wen-Dung Hsu Bernard Haochih Liu Peter K. Liaw Chuan-Feng Shih |
| author_facet | Cheng-Hsien Yeh Chia-Hua Hu Hsuan-Ta Wu Wen-Dung Hsu Bernard Haochih Liu Peter K. Liaw Chuan-Feng Shih |
| author_sort | Cheng-Hsien Yeh |
| collection | DOAJ |
| description | Soft magnetic materials are required to exhibit high saturation magnetization and low coercivity. Iron-based metal alloys, such as FeMnZn, are commonly used commercial soft magnetic materials with electromagnetic shielding functions. However, these alloys generally exhibit low saturation magnetization, poor high-temperature stability, and significant magnetic losses. In recent years, many research groups have highlighted the excellent soft magnetic properties of high-entropy alloys (HEAs). This study develops new HEA powders with superior soft magnetic characteristics for applications in low-frequency magnetic shielding components. The research found that the FeCoNiSiCuNb HEA, under appropriate ball-milling and annealing conditions, exhibits high saturation magnetization and excellent high-temperature properties, retaining over 50 % of its magnetism even at 700K. At an operating frequency of 100 kHz, compared to FeMnZn, the real permeability of the FeCoNiSiCuNb HEA is increased by 2.25 times. Preparing this HEA material as a magnetic shielding material can lead to higher inductance, a coupling coefficient increased to 0.84, and a transmission efficiency improvement of 19 %, demonstrating the potential of high-entropy alloys in wireless charging applications. |
| format | Article |
| id | doaj-art-fb0acc94165b4f2e92161cfc648f76a1 |
| institution | OA Journals |
| issn | 2590-0498 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials Today Advances |
| spelling | doaj-art-fb0acc94165b4f2e92161cfc648f76a12025-08-20T02:37:39ZengElsevierMaterials Today Advances2590-04982024-12-012410054010.1016/j.mtadv.2024.100540High-entropy alloys as magnetic shielding materials in low-frequency wireless power transmissionCheng-Hsien Yeh0Chia-Hua Hu1Hsuan-Ta Wu2Wen-Dung Hsu3Bernard Haochih Liu4Peter K. Liaw5Chuan-Feng Shih6Department of Electrical Engineering, National Cheng Kung University, Tainan, 70101, TaiwanDepartment of Electrical Engineering, National Cheng Kung University, Tainan, 70101, TaiwanDepartment and Institute of Electrical Engineering, Minghsin University of Science and Technology, Hsinchu, 30401, TaiwanDepartment of Materials Science and Engineering, National Cheng Kung University, Tainan, 70101, Taiwan; Program on Semiconductor Packaging and Testing, Academy of Innovative Semiconductor and Sustainable Manufacture, National Cheng Kung University, Tainan, 70101, Taiwan; Applied High Entropy Technology (AHET) Center, National Cheng Kung University, Tainan, 70101, TaiwanDepartment of Materials Science and Engineering, National Cheng Kung University, Tainan, 70101, Taiwan; Applied High Entropy Technology (AHET) Center, National Cheng Kung University, Tainan, 70101, TaiwanDepartment of Materials Science and Engineering, The University of Tennessee, Knoxville, TN, 37996, USADepartment of Electrical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan; Applied High Entropy Technology (AHET) Center, National Cheng Kung University, Tainan, 70101, Taiwan; Corresponding author. Department of Electrical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan.Soft magnetic materials are required to exhibit high saturation magnetization and low coercivity. Iron-based metal alloys, such as FeMnZn, are commonly used commercial soft magnetic materials with electromagnetic shielding functions. However, these alloys generally exhibit low saturation magnetization, poor high-temperature stability, and significant magnetic losses. In recent years, many research groups have highlighted the excellent soft magnetic properties of high-entropy alloys (HEAs). This study develops new HEA powders with superior soft magnetic characteristics for applications in low-frequency magnetic shielding components. The research found that the FeCoNiSiCuNb HEA, under appropriate ball-milling and annealing conditions, exhibits high saturation magnetization and excellent high-temperature properties, retaining over 50 % of its magnetism even at 700K. At an operating frequency of 100 kHz, compared to FeMnZn, the real permeability of the FeCoNiSiCuNb HEA is increased by 2.25 times. Preparing this HEA material as a magnetic shielding material can lead to higher inductance, a coupling coefficient increased to 0.84, and a transmission efficiency improvement of 19 %, demonstrating the potential of high-entropy alloys in wireless charging applications.http://www.sciencedirect.com/science/article/pii/S2590049824000778 |
| spellingShingle | Cheng-Hsien Yeh Chia-Hua Hu Hsuan-Ta Wu Wen-Dung Hsu Bernard Haochih Liu Peter K. Liaw Chuan-Feng Shih High-entropy alloys as magnetic shielding materials in low-frequency wireless power transmission Materials Today Advances |
| title | High-entropy alloys as magnetic shielding materials in low-frequency wireless power transmission |
| title_full | High-entropy alloys as magnetic shielding materials in low-frequency wireless power transmission |
| title_fullStr | High-entropy alloys as magnetic shielding materials in low-frequency wireless power transmission |
| title_full_unstemmed | High-entropy alloys as magnetic shielding materials in low-frequency wireless power transmission |
| title_short | High-entropy alloys as magnetic shielding materials in low-frequency wireless power transmission |
| title_sort | high entropy alloys as magnetic shielding materials in low frequency wireless power transmission |
| url | http://www.sciencedirect.com/science/article/pii/S2590049824000778 |
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