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Open AccessArticle

Highly Ductile and Ultra-Thick P-Doped FeSiB Amorphous Alloys with Excellent Soft Magnetic Properties

Advanced Energy & Materials Research Institute Co., Ltd., Changzhou 213000, China
Central Iron & Steel Research Institute, Advanced Technology & Materials Co., Ltd., Beijing 100081, China
Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
Author to whom correspondence should be addressed.
Materials 2018, 11(7), 1148;
Received: 28 May 2018 / Revised: 17 June 2018 / Accepted: 2 July 2018 / Published: 6 July 2018
(This article belongs to the Special Issue Advanced Materials for Power Electronics)
Herein, we demonstrate the successful synthesis of novel Fe80Si9B(11−x)Px (x = 0, 1, 3, 5, 7) ultra-thick amorphous ribbons by planar flow casting. The influence of P alloying on glass forming ability (GFA), microstructure, thermal stability, soft magnetic properties, and ductility has been systematically investigated. The results reveal that introduction of P into Fe80Si9B11 alloy can remarkably enhance the GFA and increase critical thickness (tc) of the alloy from 45 to 89 um. Furthermore, the annealed FeSiBP amorphous alloys exhibited excellent soft magnetic properties, including high saturation magnetic flux density of 1.54 T, the low coercivity of 1.5 A/m, and low core losses of 0.15 W/kg. In addition, the representative Fe80Si9B8P3 ultra-thick amorphous alloy demonstrate excellent ductility even after annealing at 400 °C for 10 min, which indicates the superior performance of P-doped FeSiB alloys as compared to the commercial Fe78Si9B13 (Metglas 2605 S2) alloy. The combination of high GFA, excellent ductility, and low core losses of newly developed FeSiBP amorphous soft magnetic alloys makes them attractive candidates for magnetic applications in the high-frequency and high-speed electric devices. View Full-Text
Keywords: amorphous alloys; microstructure; soft magnetic properties; bending ductility amorphous alloys; microstructure; soft magnetic properties; bending ductility
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MDPI and ACS Style

Li, Z.; Zhou, S.; Zhang, G.; Zheng, W. Highly Ductile and Ultra-Thick P-Doped FeSiB Amorphous Alloys with Excellent Soft Magnetic Properties. Materials 2018, 11, 1148.

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