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Solvothermal synthesis of hollow glass microspheres/Fe3O4 composites as a lightweight microwave absorber
- Source :
- Journal of Materials Science. 48:6048-6055
- Publication Year :
- 2013
- Publisher :
- Springer Science and Business Media LLC, 2013.
-
Abstract
- Hollow glass microspheres/Fe3O4 (HGMs/Fe3O4) composites with low density were successfully synthesized by solvothermal method at 160 °C. The morphology, composition, and microstructure of the samples were characterized by scanning electron microscopy and X-ray diffraction, respectively. The results show that the HGMs/Fe3O4 composites exhibit compact and continuous Fe3O4 particles coating on the surface of HGMs. The complex permeability and permittivity of HGMs/Fe3O4 composites obtained at 160 °C for different reaction times were measured in the frequency range of 1–18 GHz by vector network analysis. The microwave absorption properties were well-elucidated by the traditional coaxial line method. The as-prepared HGMs/Fe3O4 composites show excellent microwave absorption properties. When the thicknesses of these HGMs/Fe3O4 composites are more than 1.5 mm, they all exhibit strong absorption peaks (lower than −10 dB). A possible mechanism of the improved microwave absorption properties was discussed.
Details
- ISSN :
- 15734803 and 00222461
- Volume :
- 48
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Science
- Accession number :
- edsair.doi...........1439d617721e57dae2d4ffd611d9b858