MWCNT/FeNi复合纳米线制备及其雷达微波和工频电磁波吸收性能

MWCNT/FeNi Composite Nanowires for Efficient Electromagnetic Wave Absorption on Microwave and Power Frequency

在多壁碳纳米线(MWCNT)上负载纳米FeNi粒子,同时实现2~18GHz和工频(50Hz)电磁波的高效吸收和衰减。首先采用化学镀方法制备MWCNT/Ni,然后采用多元醇的方法,制备MWCNT/FeNi复合纳米线。通过透射电子显微镜、X射线衍射和矢量网络分析等方法,对MWCNT/FeNi复合纳米线的微观结构进行分析。结果表明,MWCNT/FeNi复合纳米线具有有效的雷达微波吸收带(RL<-10dB)范围为3.5~13.5GHz,能够衰减50Hz工频电磁波产生的76%电场感应以及58%磁场感应。

Nanosized FeNi particles were loaded along multiwalled carbon nanotubes（MWCNT）to achieve high performance to attenuate electromagnetic（EM）waves of 2-18 GHz and power frequency（50 Hz）.The MWCNT/Ni was produced through the electroless plating method,then followed by a polyol approach to produce MWCNT/FeNi composite nanowires.The microstructure of MWCNT/FeNi composite nanowires was characterized by transmission electron microscopy,scanning electron microscope,X-ray diffraction and vector network analysis.The results show that the multi-component structure endows MWCNT/FeNi composite nanowires with effective EM absorption band（RL-10 dB）covering the frequency range of 3.5-13.5 GHz.Meanwhile,76%electric field and 58% magnetic field are produced with the attenuation of 50 Hz power frequency electromagnetic（EM）wave.