About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Core–shell structured high-entropy alloy soft magnetic composites and high-frequency inductor properties |
| Author(s) |
Cheng-Hsien Yeh, Hsun-Chih Cho, Cheng-Hsien Tu, Wen-Dung Hsu, Bernard Haochih Liu, Chuan-Feng Shih |
| On-Site Speaker (Planned) |
Cheng-Hsien Yeh |
| Abstract Scope |
This work explores the application of core–shell structured high-entropy alloy (HEA) soft magnetic composites in high-frequency inductors. We systematically investigated HEA powders, surface treatments, magnetic ring fabrication, and inductor integration to enable excellent magnetic performance with low loss at high frequencies. HEA powders prepared via vacuum melting and gas atomization achieved a saturation magnetization of 142 emu/g with 5 wt.% phosphoric acid treatment, which increased to 154 emu/g after adding 0.3 wt.% zinc phosphate. At 2 MHz, magnetic rings exhibited a real permeability of 6.95 H/m, a loss tangent of ~0.006, insulation resistance of 2.65 × 10⁸ Ω, and passed 1000 V high-voltage tests. Inductors showed 6.03 µH inductance (10 kHz–10 MHz, no DC bias) and a Q factor of 197 at 5 A DC bias. Saturation currents reached 46 A at 300 kHz and 59 A at 2 MHz. These results demonstrate the strong potential of HEA soft magnetic composites for next-generation high-frequency inductors. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Composites, Powder Materials |