原位生长FeCo/rGo纳米复合材料的电磁波吸收性能研究

Electromagnetic wave absorption properties of FeCo/rGo nanocomposites grown in situ

利用化学开发高性能吸波材料是解决电磁污染问题和实现军事装备雷达隐身的有效手段。基于化学原位生长策略,以金属离子Fe^(2+)和Co^(2+)为原料,采用一步水热法制备FeCo/rGo复合材料,并对其形貌、结构以及吸波性能进行测试和分析。结果表明,当FeCo和氧化石墨烯的复合比为1∶0.5在厚度1.9 mm时有效吸收带宽达到5.5 GHz,其最小反射损耗达到-54.14 dB。复合比为1∶1时则实现了1.3 mm,4.5 GHz有效吸收带宽的吸波性能,这表明FeCo/rGo磁性材料有望成为一种极具应用价值的电磁吸波材料。

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 Fe 2+and Co 2+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 reflection 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.