Regensburg 2025 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 31: Poster II
MA 31.5: Poster
Mittwoch, 19. März 2025, 17:00–19:30, P1
Effect of Ni addition to Fe-B-Si-Nb alloy on magnetic and thermal properties — •Purbasha Sharangi1, Uma Rajput2, Amirhossein Ghavimi2, Ralf Busch2, Isabella Gallino3, Gabriele Barrera1, Enzo Ferrara1, and Paola Tiberto1 — 1INRIM, Istituto Nazionale di Ricerca Metrologica, Strade delle Cacce, 5, 10135 Torino, Italy. — 2Saarland University, Chair of Metallic Materials, Campus C6.3 66123, Saarbrücken, Germany — 3Technical University of Berlin, Chair of Metallic Materials, Ernst-Reuter Platz 1, 10587 Berlin, Germany
The next generation of electrical equipment, such as motors and generators, and power electronics, depend heavily on soft magnetic materials. It has been reported that the addition of Ni to Fe-Si-B-Nb BMGs has shown significant improvements in both their soft magnetic properties and plasticity. Fe-based BMGs that incorporate Ni exhibit a good glass forming ability (GFA), reasonable soft magnetic properties and improved mechanical performance. In this work we have investigated the effect of Ni addition and annealing on the microstructural, thermal and magnetic properties of Fe-B-Si-Nb alloy. It has been observed that the GFA is improved from 800 μm to almost 1000 μm upon the addition of 2 to 5 at. % Ni. A slight increment in saturation magnetization and reduction in coercive field have been observed with increasing the Ni% for the as cast ribbons. Further, the soft magnetic properties improve significantly in the form of reduced coercivity and energy losses after annealing the ribbons at 320 °C for 2 hours due to the relief of frozen-in stresses.
Keywords: Soft magnetic materials; amorphous ribbons; glass forming ability; hysteresis loss