VP17-01 Influence of Crushing Process on the Magnetic Properties of Configurable Nanocrystalline Flake Ribbons
Creators: Yibo Wang
C. Q. Jiang1
Jingchun Xiang
Liping Mo
Xiaosheng Wang
Weisheng Guo
Publisher: name: IEEE
Year: 2025

This paper analyzes the configurable nanocrystalline flake ribbon (NFR) material with different crushing processes. The NFR soft magnetic material has gained significant attention in power electronics applications such as inductive power transfer (IPT), power transformers, inductors, and filters. The material originates from the Fe-based nanocrystalline alloy and undergoes further crushing process to exhibit lower conductivity, compromising the permeability and high-frequency performance. Different crushing processes can result in various performances even with the same achieved permeability. This study compares sample cores with dot and square crushing from the perspective of permeability variations against frequency and core loss characteristics. The two sample cores under evaluation have the same initial permeability at 10 kHz. However, the permeability of dot crushing drops nearly 37% from 10 kHz to 1 MHz, while the decrease in the square crushing core is only 25%. Moreover, core loss measurements are conducted with sinusoidal excitation, revealing that the square crushing core exhibits less core loss compared to the dot crushing core. These findings highlight the critical role of the crushing process in determining the magnetic performance of the material.References: [1] D. Wang et al., “Modern Advances in Magnetic Materials of Wireless Power Transfer Systems: A Review and New Perspectives,” Nanomaterials, vol. 12, no. 20, Art. no. 20, Jan. 2022. [2] Z. Li, W. Han, Z. Xin, Q. Liu, J. Chen, and P. C. Loh, “A Review of Magnetic Core Materials, Core Loss Modeling and Measurements in High-Power High-Frequency Transformers,” CPSS Transactions on Power Electronics and Applications, vol. 7, no. 4, pp. 359–373, Dec. 2022. [3] A. Ahmad, M. S. Alam, and R. Chabaan, “A Comprehensive Review of Wireless Charging Technologies for Electric Vehicles,” IEEE Transactions on Transportation Electrification, vol. 4, no. 1, pp. 38–63, Mar. 2018. [4] P. Thakur, D. Chahar, S. Taneja, N. Bhalla, and A. Thakur, “A review on MnZn ferrites: Synthesis, characterization and applications,” Ceramics International, vol. 46, no. 10, Part B, pp. 15740–15763, Jul. 2020. [5] P. Thakur, S. Taneja, D. Chahar, B. Ravelo, and A. Thakur, “Recent advances on synthesis, characterization and high frequency applications of Ni-Zn ferrite nanoparticles,” Journal of Magnetism and Magnetic Materials, vol. 530, p. 167925, Jul. 2021. [6] X. Qi et al., “A Review of Fe-Based Amorphous and Nanocrystalline Alloys: Preparations, Applications, and Effects of Alloying Elements,” physica status solidi (a), vol. 220, no. 14, p. 2300079, 2023. [7] Y. Wang, C. Q. Jiang, C. Chen, T. Ma, X. Li and T. Long, "Hybrid Nanocrystalline Ribbon Core and Flake Ribbon For High-Power Inductive Power Transfer Applications," IEEE Transactions on Power Electronics, vol. 39, no. 1, pp. 1898-1911, Jan. 2024 [8] Z. Luo, X. Li, C. Jiang, and T. Long, “Characterization of Nanocrystalline Flake Ribbon for High Frequency Magnetic Cores,” IEEE Transactions on Power Electronics, vol. 37, no. 12, pp. 14011–14016, Dec. 2022. [9] Wang Y, Jiang C Q, Mo L, et al. "Magnetic analysis of permeability configurable nanocrystalline flake ribbons for medium frequency energy conversion applications." Materials Today Sustainability, 2024, 27: 100795.
This paper analyzes the configurable nanocrystalline flake ribbon (NFR) material with different crushing processes. The NFR soft magnetic material has gained significant attention in power electronics applications such as inductive power transfer (IPT), power transformers, inductors, and filters. The material originates from the Fe-based nanocrystalline alloy and undergoes further crushing process to exhibit lower conductivity, compromising the permeability and high-frequency performance. Different crushing processes can result in various performances even with the same achieved permeability. This study compares sample cores with dot and square crushing from the perspective of permeability variations against frequency and core loss characteristics. The two sample cores under evaluation have the same initial permeability at 10 kHz. However, the permeability of dot crushing drops nearly 37% from 10 kHz to 1 MHz, while the decrease in the square crushing core is only 25%. Moreover, core loss measurements are conducted with sinusoidal excitation, revealing that the square crushing core exhibits less core loss compared to the dot crushing core. These findings highlight the critical role of the crushing process in determining the magnetic performance of the material.References: [1] D. Wang et al., “Modern Advances in Magnetic Materials of Wireless Power Transfer Systems: A Review and New Perspectives,” Nanomaterials, vol. 12, no. 20, Art. no. 20, Jan. 2022. [2] Z. Li, W. Han, Z. Xin, Q. Liu, J. Chen, and P. C. Loh, “A Review of Magnetic Core Materials, Core Loss Modeling and Measurements in High-Power High-Frequency Transformers,” CPSS Transactions on Power Electronics and Applications, vol. 7, no. 4, pp. 359–373, Dec. 2022. [3] A. Ahmad, M. S. Alam, and R. Chabaan, “A Comprehensive Review of Wireless Charging Technologies for Electric Vehicles,” IEEE Transactions on Transportation Electrification, vol. 4, no. 1, pp. 38–63, Mar. 2018. [4] P. Thakur, D. Chahar, S. Taneja, N. Bhalla, and A. Thakur, “A review on MnZn ferrites: Synthesis, characterization and applications,” Ceramics International, vol. 46, no. 10, Part B, pp. 15740–15763, Jul. 2020. [5] P. Thakur, S. Taneja, D. Chahar, B. Ravelo, and A. Thakur, “Recent advances on synthesis, characterization and high frequency applications of Ni-Zn ferrite nanoparticles,” Journal of Magnetism and Magnetic Materials, vol. 530, p. 167925, Jul. 2021. [6] X. Qi et al., “A Review of Fe-Based Amorphous and Nanocrystalline Alloys: Preparations, Applications, and Effects of Alloying Elements,” physica status solidi (a), vol. 220, no. 14, p. 2300079, 2023. [7] Y. Wang, C. Q. Jiang, C. Chen, T. Ma, X. Li and T. Long, "Hybrid Nanocrystalline Ribbon Core and Flake Ribbon For High-Power Inductive Power Transfer Applications," IEEE Transactions on Power Electronics, vol. 39, no. 1, pp. 1898-1911, Jan. 2024 [8] Z. Luo, X. Li, C. Jiang, and T. Long, “Characterization of Nanocrystalline Flake Ribbon for High Frequency Magnetic Cores,” IEEE Transactions on Power Electronics, vol. 37, no. 12, pp. 14011–14016, Dec. 2022. [9] Wang Y, Jiang C Q, Mo L, et al. "Magnetic analysis of permeability configurable nanocrystalline flake ribbons for medium frequency energy conversion applications." Materials Today Sustainability, 2024, 27: 100795.