Glass formation, crystallization and magnetic properties of high-Fe Fe-metalloid (B, C, and P) melt-spun ribbons

•High-iron Fe-metalloid (B, C, and P) amorphous alloys are fabricated.•Completely amorphous structure only formed in an alloy composition of Fe85B9C2P4.•The high difference Ep value makes the α-Fe phase abnormally stable.•The x = 2 alloy annealed at 698 K for 10–20 min exhibits optimum magnetic prop...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2020-03, Vol.498, p.166128, Article 166128
Main Authors: Li, Wen, Yang, Y.H., Xie, C.X., Yang, Y.Z., Liu, H.Y., Wang, K.W., Liao, Z.L.
Format: Article
Language:English
Subjects:
Alloys
Amorphous alloys
Annealing
Coercivity
Composition
Crystallization
Fe-metalloid amorphous alloy
Glass formation
Glass transition temperature
Magnetic properties
Magnetic saturation
Magnetism
Melt spinning
Metallic glasses
Metalloid alloys
Raw materials
Ribbons
Soft magnetic properties
Tapes (metallic)
Thermal stability
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Summary:•High-iron Fe-metalloid (B, C, and P) amorphous alloys are fabricated.•Completely amorphous structure only formed in an alloy composition of Fe85B9C2P4.•The high difference Ep value makes the α-Fe phase abnormally stable.•The x = 2 alloy annealed at 698 K for 10–20 min exhibits optimum magnetic properties. High-Fe Fe-metalloid alloys with the nominal composition of Fe85B11–xCxP4 (x = 0, 0.5, 1, 2, 3, 4) were fabricated through the melt-spun technique. Then, the effects of C content on the glass formation, crystallization behavior and magnetic properties of Fe–B–C–P alloys were investigated. Results showed that the completely amorphous structure only formed in an alloy composition of Fe85B9C2P4 (2 at.% C). Moreover, α-Fe phase appeared gradually when C was added continuously. The introduction of C can significantly improve the thermal stability and reduce the glass transition temperature Tg. The appropriate annealing temperature and annealing time can significantly increase the saturation magnetization (Ms) and reduce the coercivity (Hc). Fe85B9C2P4 amorphous alloy annealed at 698 K for 600–1200 s exhibits excellent soft magnetic properties, such as typical Ms of approximately 165–167 Am2/kg and Hc of approximately 5.0–5.1 A/m. Low cost of raw materials and good soft magnetic properties make this alloy a promising candidate for future application.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2019.166128