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A novel Fe3C/graphitic carbon composite with electromagnetic wave absorption properties in the C-band

机译：具有C波段电磁波吸收特性的新型Fe3C /石墨碳复合材料

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摘要

An electromagnetic (EM) wave absorber with characteristic absorption in the millimeter wave range is very important for the EM industry. Especially, absorption properties in the microwave frequency range C-band (4-8 GHz) are necessary in the field of military aircraft. Herein, a Fe3C/graphitic carbon (Fe3C/GC) composite has been synthesized through a low-cost and facile ion-exchange route. The Fe3C/GC could exhibit excellent EM wave absorption properties in the C-band with the frequency range of 4-8 GHz and also exhibits good dielectric loss, which could be attributed to the existence of lightweight GC in the composite. The reflection loss value of the Fe3C/GC composite exceeds -10 dB in the frequency range of 4-8 GHz with an absorber thickness of 2-4 mm, implying its potential application as a lightweight EM wave absorber in the C-band region. Moreover, the Fe3C/GC composite shows better electromagnetic wave absorption properties than other iron compound GC-based composites, such as Fe2N/GC and Fe/GC.
机译：具有在毫米波范围内的特征吸收的电磁（EM）吸收器对于EM工业非常重要。尤其是，在军用飞机领域中，在C波段（4-8 GHz）微波频率范围内的吸收特性是必需的。在此，已经通过低成本且容易的离子交换途径合成了Fe 3 C /石墨碳（Fe 3 C / GC）复合物。 Fe3C / GC可以在4-8 GHz频率范围内的C波段中表现出优异的EM波吸收特性，并且还具有良好的介电损耗，这可以归因于复合材料中存在轻质GC。 Fe3C / GC复合材料的反射损耗值在4-8 GHz的频率范围内超过-10 dB，吸收层厚度为2-4 mm，这暗示了其在C波段区域作为轻型EM波吸收层的潜在应用。此外，Fe3C / GC复合材料显示出比其他基于铁化合物GC的复合材料（如Fe2N / GC和Fe / GC）更好的电磁波吸收性能。

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