H. T. Miao, C. T. Chang, Y. H. Li, Y. M. Wang, X. J. Jia, W. Zhang*,J Non-Cryst Solid, 2015, 421: 24-29

Abstract 

Soft magnetic Fe–Co–Ni–P–C–B bulk metallic glasses (BMGs) with good combination of superior glass-forming ability (GFA), low glass transition temperature (T_g) and large supercooled liquid region (ΔT_x) were reported in this work. The experimental results show that the GFA and ΔT_x of a Fe₇₅P₁₀C₁₀B₅ metallic glass can be enhanced effectively with the addition of Co and Ni elements, while the T_g is depressed. The (Fe, Co, Ni)₇₅P₁₀C₁₀B₅ fully glassy rods with diameters up to 2.5 mm can be achieved by copper mold casting, and the BMGs exhibit low T_g of 664–687 K, large ΔT_x of 58–60 K, and low viscosity of 5.0–6.2 × 10⁸ Pa·s in the supercooled liquid state, indicating high thermoplastic formability. Mechanical and magnetic measurements demonstrate that the (Fe, Co, Ni)₇₅P₁₀C₁₀B₅BMGs exhibit high fracture strength of 2920–2990 MPa, and excellent soft magnetic properties, i.e., rather high saturation magnetization of 1.02–1.22 T and low coercive force of 3.8–5.2 A/m. The present Fe-based BMGs with good combination of superior properties are promising functional materials.

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