首页|High permeability and low core loss Fe-based soft magnetic composites with Co-Ba composite ferrite insulation layer obtained by sol-gel method
High permeability and low core loss Fe-based soft magnetic composites with Co-Ba composite ferrite insulation layer obtained by sol-gel method
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
To balance the core loss and permeability of soft magnetic composites (SMCs), a Co-Ba composite ferrite insulation layer was employed to clad the surface of reduced iron powder by sol-gel method. The successful preparation of the honeycomb-like Co-Ba composite ferrite coating layer was verified by scanning electron microscopy (SEM), the composition of the coating was determined by X-ray diffraction (XRD), and the magnetic properties were tested with a B-H curve analyzer. BSEM images of the polished cross-section and core loss separation results confirmed that an excessively high annealing temperature causes the composite ferrite insulation layer to fail. A high effective permeability of up to 121 at 300 kHz and low core loss (P-cv) of 129 kW/m(3) at 100 kHz and 0.02 T were obtained in prepared samples at the optimized annealing temperature of 500 degrees C. Subsequently, simulation analysis based on the Clausius-Maxwell formula model was used to confirm the feasibility of the enhancement on effective permeability in Fe@Co-Ba composite ferrite theoretically. The agreement between simulation and experimental results further indicated that a good balance between the core loss and permeability of Fe-based SMCs was achieved by Co-Ba composite ferrite cladding. (C) 2021 Elsevier B.V. All rights reserved.
Fe-based soft magnetic compositesCo-Ba composite ferriteInsulation layerPermeability calculationSol-gel processesHEAT-TREATMENTNANOPARTICLESPARTICLESCOFE2O4
NSTL
Elsevier
