反射损耗
材料科学
复合材料
介电损耗
微波食品加热
阻抗匹配
电介质
镍
煅烧
复合数
电阻抗
光电子学
冶金
电气工程
物理
工程类
量子力学
催化作用
化学
生物化学
作者
Leiting Weng,Xiang Lei,Jingping Liu,Huixia Hu,Jinliang Wang,Zhiqian Zhang
标识
DOI:10.1016/j.jallcom.2022.164301
摘要
In this paper, the carbon coated iron nickel nanoparticles were obtained by calcining PVP crosslinked iron nickel oxalate. The morphology, structural composition and microwave-absorbing (MA) properties of the composites were analyzed by various characterization methods. The results show that FeNi/C composites have excellent impedance matching characteristics and MA performance in multiple frequency by virtue of their microscopic network structure. At the same time, through the analysis of loss mechanism, we found that the material has high dielectric loss and magnetic loss characteristics. Under the joint action of various loss mechanisms such as interface polarization and eddy current loss, the material has a high reflection loss (RL) value at different frequency. At a thickness of 3 mm, the sample FNC12 has a minimum RL of − 52.99 dB at 3.6 GHz. The effective absorption bandwidth (EAB) (RL ≤ −10 dB) is 1.81 GHz.
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