The development of novel materials with high-efficiency microwave absorption is crucial for mitigating the adverse impacts of electromagnetic pollution. In this study, MXene and FeNi Prussian blue analogs (PBA) are assembled onto a melamine foam using self-assembly and in situ growth technique. Subsequently, magnetic carbon foam, comprising FeNi alloys, TiN and carbon with various morphologies, is synthesized via carbothermal reduction reaction. The surface morphology electromagnetic properties are significantly influenced by the pyrolysis temperature. The results revealed that the magnetic carbon foam composite demonstrated an effective microwave absorption bandwidth of 4.72 GHz at a thickness of only 1.5 mm, with a minimum reflection loss of −24.83 dB at 1.3 mm. The outstanding microwave absorption performance can be attributed to the 3D conductive network formed by N-doped carbon, as well as the contributions from polarization loss, magnetic loss, and suitable impedance matching. Furthermore, the corresponding absorber coating demonstrated a maximum reduction value of radar cross-section (RCS) by 13.16 dB m². This research offers novel insights for the development of lightweight and efficient low-filled electromagnetic composite for broadband microwave absorption.

中文翻译：

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轻松制备三聚氰胺/MXene/FeNi-PBA复合材料衍生的多界面磁性碳泡沫，用于高效微波吸收


开发具有高效微波吸收能力的新型材料对于减轻电磁污染的不利影响至关重要。在这项研究中，利用自组装和原位生长技术将 MXene 和 FeNi 普鲁士蓝类似物 (PBA) 组装到三聚氰胺泡沫上。随后，通过碳热还原反应合成了由FeNi合金、TiN和不同形貌的碳组成的磁性碳泡沫。表面形貌电磁特性受热解温度的显着影响。结果表明，磁性碳泡沫复合材料在厚度仅为 1.5 mm 时表现出 4.72 GHz 的有效微波吸收带宽，在 1.3 mm 处的最小反射损耗为 -24.83 dB。出色的微波吸收性能可归因于N掺杂碳形成的3D导电网络，以及极化损耗、磁损耗和合适的阻抗匹配的贡献。此外，相应的吸波涂层表现出雷达截面（RCS）最大减少值13.16 dB m ² 。这项研究为开发用于宽带微波吸收的轻质高效低填充电磁复合材料提供了新颖的见解。