Structure and Microwave Absorption Properties of Ho-Fe-Si Alloys
The Ho2Fe17-xSix (x=0.0, 0.1, 0.2, 0.3) alloys were prepared by arc melting and high energy ball milling method.The influence of the Si substitution on phase structure, morphology and electromagnetic parameters were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and vector network analyzer (VNA), respectively.The results show that the Ho-Fe-Si particles are flaky after the ball milling.The minimum absorption peak frequency shifts towards a lower frequency region with the increasing of Si content.The minimum RL of Ho2Fe16.7Si0.3 reaches-42.96 dB at 9.76 GHz, and the frequency bandwidth of R<-10 dB reaches about 2.64 GHz with the best matching condition d=l.6 mm.The reflection loss with the thickness ranging of 1.2-3.0 mm could reach-10 dB, which indicates the particles be considered as the promising microwave absorbing materials with a good absorption properties.
Ho2Fe17-xSix alloys Ball milling Electromagnetic parameters Microwave absorbing properties
Jia-Liang Luo Shun-Kang Pan Li-Chun Cheng Pei-Hao Lin Yu He Jun-Qing Chang
School of Material Science and Engineering, Guilin University of Electronic Technology,Guilin 541004 School of Material Science and Engineering, Guilin University of Electronic Technology,Guilin 541004
国际会议
银川
英文
117-123
2017-08-16（万方平台首次上网日期，不代表论文的发表时间）