Abstract
FeSi/glass composites with different glass content by using low melting glass as adhesive and insulating agent are prepared, and their magnetic properties are investigated. SEM morphology shows that the glass particles between different FeSi spheres deform into flakes after heat treatment, which reveals that glass powder acts as adhesive and insulating agent in the composites. The FeSi/glass composites have high saturation magnetization (up to 210 Am2/kg), low magnetic losses (less than 2100 kW/m3 at 100mT and 100 kHz) and moderate permeability. The moderate eddy current loss obtained by losses separation further indicates that the eddy current between different FeSi spheres is effectively blocked by glass. The advantages of this new preparation process of SMCs are also discussed.
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