Electromagnetic wave absorption properties of FeCo/rGo nanocomposites grown in situ
The development of high-performance absorbing materials is an effective means to solve the problem of electromagnetic pollution and realize the radar stealth of military equipment.Based on the chemical in situ growth strategy,FeCo/rGo composites were prepared by one-step hydrothermal method with metal ions Fe2+and Co2+as raw materials.The morphology,structure and wave absorption properties of FeCo/rGo composites were tested and analyzed.The results show that when the recombination ratio of FeCo and graphene oxide is 1∶0.5 and the thickness is 1.9 mm,the effective absorption bandwidth reaches 5.5 GHz,and the minimum reflec-tion loss reaches-54.14 dB.When the composite ratio is 1∶1,the absorption performance of 1.3 mm and 4.5 GHz effective absorption bandwidth is achieved,which indicates that FeCo/rGo magnetic material is expected to become a kind of electromagnetic wave absorption material with great application value.
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