Effect of Annealing Process on Microstructure and Magnetic Properties of FeSiBPCNbCu Nanocrystalline Soft Magnetic Powder Cores
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Characterization of Fe74.75Si8B10P3C2Nb1.5Cu0.75 Powder and NPCs Coating Behavior
3.2. Magnetic Properties and Microstructures of Fe74.75Si8B10P3C2Nb1.5Cu0.75 NPCs Annealed at Different HR
3.3. Magnetic Properties and Microstructures of Fe74.75Si8B10P3C2Nb1.5Cu0.75 NPCs Annealed for Different HT
3.4. Magnetic Domain Motion Behavior of Fe74.75Si8B10P3C2Nb1.5Cu0.75 NPCs
3.5. Nanocrystallization Processes of Fe74.75Si8B10P3C2Nb1.5Cu0.75 NPCs
4. Conclusions
- (1)
- The moderate HR and HT of 100 K/min and 30 min lead to a finely uniform nanocrystalline structure, which shows a concentrated grain size distribution and a fine grain size of 18.71 nm.
- (2)
- The NPCs annealed under the HR and HT of 100 K/min and 30 min show a modified magnetic domain structure, where no obvious pinning points can be observed, and the domain wall moves easier than that of the NPCs annealed under other annealing conditions, which indicates the reduction of Hc.
- (3)
- The NPCs annealed under the HR and HT of 100 K/min and 30 min show excellent comprehensive soft magnetic properties, including a low Hc of 10.5 A/m 7.0 (50 mT, 500 kHz), high μe of 64.7 (100 kHz), and low Pcv of 751 mW/cm3 (50 mT, 500 kHz).
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Wu, Y.; Dong, Y.; Yang, M.; Jia, X.; Liu, Z.; Lu, H.; Zhang, H.; He, A.; Li, J. Effect of Annealing Process on Microstructure and Magnetic Properties of FeSiBPCNbCu Nanocrystalline Soft Magnetic Powder Cores. Metals 2022, 12, 845. https://doi.org/10.3390/met12050845
Wu Y, Dong Y, Yang M, Jia X, Liu Z, Lu H, Zhang H, He A, Li J. Effect of Annealing Process on Microstructure and Magnetic Properties of FeSiBPCNbCu Nanocrystalline Soft Magnetic Powder Cores. Metals. 2022; 12(5):845. https://doi.org/10.3390/met12050845
Chicago/Turabian StyleWu, Yue, Yaqiang Dong, Munan Yang, Xingjie Jia, Zhonghao Liu, Hao Lu, Haijie Zhang, Aina He, and Jiawei Li. 2022. "Effect of Annealing Process on Microstructure and Magnetic Properties of FeSiBPCNbCu Nanocrystalline Soft Magnetic Powder Cores" Metals 12, no. 5: 845. https://doi.org/10.3390/met12050845