Thermal Stability, Mechanical Properties and Magnetic Properties of Fe-based Amorphous Ribbons with the Addition of Mo and Nb

Abstract

The metallic glass ribbons of [(FexCo1-x)(0.75)B0.2Si0.(05)](96)Mo-4 (x = 0, 0.3, 0.6, 0.9 at. %) and [(Fe(x)Cn(1-x))(0.75)B0.2Si0.05](96)Nb-4 (x = 0, 0.3, 0.6, 0.9 at. %) were obtained by melt spinning with 25-30 mu m thickness. The thermal stability, mechanical properties and magnetic properties of Fe-Co-B-Si based systems were investigated. The values of thermal stability were measured using differential scanning calorimetry (DSC), including glass transition temperature (T-g), crystallization temperature (T-x) and supercooled liquid region (Delta T-x = T-x-T-g). These amorphous ribbons were identified as fully amorphous, using X-ray diffraction (XRD). The mechanical properties of Fe-based samples were measured by nano-indentation. Magnetic properties of the amorphous ribbons were measured by a vibrating sample magnetometer (VSM). The amorphous ribbons of [(FexCo1-x)(0.75)B0.2Si0.05](96)Mo-4 (x = 0, 0.3, 0.6, 0.9 at. %) and [(FexCo1-x)(0.75)B0.2Si0.05](96)Nb-4 (x = 0, 0.3, 0.6, 0.9 at. %) exhibited soft magnetic properties with low coercive force (H-c) and high saturation magnetization (Ms).