Ni-coated carbon nanotubes/Mn-Zn ferrite composite as viable Microwave Absorbing Materials

被引：5
作者：
Wang, Wenjie [1 ]
Zang, Chongguang [1 ]
Jiao, Qingjie [1 ]
机构：
[1] Beijing Inst Technol, Sch Mechatron Engn, Beijing 100081, Peoples R China
来源：
NEW MATERIALS, APPLICATIONS AND PROCESSES, PTS 1-3 | 2012年 / 399-401卷
关键词：
composite; ferrite; Ni-coated carbon nanotube; microwave absorbing property; COMPLEX PERMEABILITY; ABSORPTION;
D O I：
10.4028/www.scientific.net/AMR.399-401.310
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper presents the design, development and characterization of the spinel ferrite [Mn0.2Zn0.8Fe2O4] powders and Nickel (Ni)-coated multiwall carbon nanotubes (MWNTs). A combination of Mn0.2Zn0.8Fe2O4 spinet ferrites particles and Nickel (Ni)-coated multiwall carbon nanotubes (MWNTs) were introduced into epoxy resin to be a microwave absorber. The structural characterizations and surface morphology of Mn0.2Zn0.8Fe2O4 and MWNTs were investigated by X-ray diffraction (XRD) and scanning electron microscopy respectively. The electromagnetic wave absorption characteristics of the composites have been studied in the frequency interval of 12-15GHz.The results for Mn0.2Zn0.8Fe2O4/EP, Mn0.2Zn0.8Fe2O4/MWNTs/EP and Mn0.2Zn0.8Fe2O4/Ni-coated MWNTs/EP microwave absorbers for the same thickness have been reported. It has been found that the Mn0.2Zn0.8Fe2O4/Ni-coated MWNTs/EP composites show the broadband characteristics with minimum absorption of 5 dB about 2.6 GHz and the maximum absorption of 37.05 dB at 14 GHz for a coating thickness of 2 mm. Therefore, Mn0.2Zn0.8Fe2O4/Ni-coated MWNTs/EP composites will be a suitable microwave absorptive material for 12-15GHz.
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收藏
页码：310 / 314
页数：5
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