Preparation and millimeter wave attenuation properties of NiFe2O4/expanded graphite composites by low-temperature combustion synthesis
| Autor: | Yao-xuan Zhang, Wen-feng Zhu, Xiong-biao Wang, Xu Wei, Hou-he Chen |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Scanning electron microscope Mechanical Engineering Infrared spectroscopy Condensed Matter Physics Crystallinity symbols.namesake Mechanics of Materials Transmission electron microscopy X-ray crystallography symbols General Materials Science Graphite Fourier transform infrared spectroscopy Composite material Raman spectroscopy |
| Zdroj: | Materials Science and Engineering: B. 185:1-6 |
| ISSN: | 0921-5107 |
| DOI: | 10.1016/j.mseb.2014.01.004 |
| Popis: | In this paper, NiFe 2 O 4 /expanded graphite (EG) composites are successfully prepared by low-temperature combustion synthesis method. The morphology, structure and millimeter wave (MMW) attenuation properties of the NiFe 2 O 4 /EG composites are investigated by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectra, scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray (EDX) and MMV radar measurement device. The effects of fuel and stoichiometric ratio on the composites are also investigated. The results show that NiFe 2 O 4 /EG composites are uniform and have a good crystallinity. The composites possess better MMW attenuation properties than EG. The 3 and 8 MMW attenuation performances of NiFe 2 O 4 /EG composites are 8.5 dB and 14.6 dB, respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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