Abstract
? 2022 Elsevier B.V.Choosing Two-Dimensional (2-D) layered semiconductor material MoS2 as the insulator, FeSiAl/MoS2 composites were synthesized by mixing MoS2 and aerosolized FeSiAl in a certain mass ratio. The structure, morphology and magnetic properties of FeSiAl/MoS2 composites were measured by XRD, SEM, XPS, VSM and B-H analyzer. The SEM results show that high-speed ball milling breaks the binding of weak Van der Waals force between MoS2 layers, and nano-thick MoS2 micron flakes wrapped on the FeSiAl spherical surface. The results of magnetic properties show that not only the FeSiAl/MoS2 composite achieves a higher magnetic permeability due to the thin MoS2 flakes clinging to the FeSiAl particle surface, but also the eddy current between the metallic particles is blocked, resulting in a great reduction of eddy current loss. The permeability results show that the relaxation frequency of FeSiAl/MoS2 composites exceeds 1 MHz, which is suitable for application at high frequency. The magnetic loss of FeSiAl/1 wt%MoS2 composite reaches 454kWm?3 under the condition of f= 0.1 MHz and B= 0.1 T, which is about three quarters of that of FeSiAl soft magnetic composites for commercial application.
NSTL
Elsevier