Journal of Advanced Materials and Technologies

Journal of Advanced Materials and Technologies

Synthesis of the Microwave Absorber Fe3O4/CFs Nanocomposite Via Electrophoretic Deposition With a Wide Effective Absorption Bandwidth

Authors
Mahdi Gholampour 1
Farid Movassagh-Alanagh 2
Hamed Salimkhani 3
1 Imam Ali university, Department of physic, Tehran, Iran.
2 Tarbiat Modares University, Department of Materials Engineering, Tehran, Iran.
3 Tabriz University, Department of Mechanical Engineering, Tabriz, Iran.
10.30501/jamt.2017.70368
Abstract
 In this study, the structural, magnetic and microwave absorption properties of a microwave absorber
composite fabricated through electrophoretic deposition (EPD) of Fe3O4 nano-particles on carbon fibers (CFs) were
studied. Firstly, co-precipitation method was employed to synthesize the Fe3O4 nano-particles. Then, these assynthesized Fe3O4 nano-particles were successfully deposited on CFs using a modified EPD process. The measured
magnetic properties of the as-synthesized Fe3O4 nano-powder and the Fe3O4/CFs nano-composite showed that the
saturation magnetization of the bare Fe3O4 was decreased from 72.3 to 33.1 emu/g for the Fe3O4/CFs nano-composite
and also its corecivity was increased from 4.9 to 168 Oe for the nano-composite. The results of reflection loss (RL)
measurements in the 8.2- 12.4 GHz frequency range indicated that the RL of Fe3O4/CFs nano-composites are
significantly influenced by their thickness. The maximum RL value of -10.2 dB at 10 GHz with an effective absorption
bandwidth about 2 GHz was obtained for the sample with the thickness of 2 mm 
Keywords
Carbon fibers
Microwave absorption
Nano-composite
Fe3O4 nano-particles
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Journal of Advanced Materials and Technologies
Volume 6, Issue 3
Winter 2017
Pages 17-26