Abstract: SiC/Fe3O4/rGO composites were synthesized by two-step of hydrothermal methods. The morphology, phase, composition, magnetism and microwave absorbing properties were investigated by SEM, XRD, XPS, VSM and VNA. The results showed that the electromagnetic loss characteristics of SiC/Fe3O4/rGO composites were improved significantly compared with hollow Fe3O4, and its loss mechanism was mainly interface polarization, eddy loss and natural resonance. It had good absorbing performance and the maximum reflection loss was -30.3 dB as the matching thickness was 2 mm, the effective bandwidth could be over 6.65 GHz as the thickness was 1.5 mm.
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