Ni3Fe/Cr nanocrystalline soft magnetic composite compacts obtained by mechanical milling and spark plasma sintering
Source abstract
Abstract
Soft magnetic composite powders were obtained by mechanical alloying using as the main component nanocrystalline Ni 3Fe powder, produced by mechanosynthesis, and 5 wt% of Cr powder. For the composite powder synthesis short milling times up to 60 min were used. The SMC were compacted by spark plasma sintering (SPS) method at a temperature of 700 °C. By X-ray diffraction and energy dispersive X-ray spectroscopy the incorporation and the distribution of Cr in Ni 3Fe particles was studied. It was found that adding 5 wt% Cr to Ni 3Fe particles increases the electrical resistivity of the samples. DC and AC magnetic characteristics have been tested and the properties of the compacts in alternative magnetic fields indicates the reduction of power losses as the milling time increases. For the composite powder obtained by 40 and 60 min milling times, a better stability of the permeability was recorded, up to a frequency of 500 Hz at an induction field of 0.05 T.
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Research context
OpenAlex topics: Metallic Glasses and Amorphous Alloys · Advanced materials and composites · Magnetic Properties of Alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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