期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 462, 期 -, 页码 153-159出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2018.04.061
关键词
Hollow microsphere; Carbonyl iron; Pitting corrosion; MWCNTs; Polyaniline; Microwave absorbers
This work presents the preparation of a novel lightweight microwave absorber nanocomposite based on a combination of hollow microspheres of iron carbonyl (CI) and polyaniline (PANI) decorated with MWCNTs by a simple blending technique. The weight ratio of hollow CI to PANI decorated with MWCNTs is 2:1. The morphology of the hollow CI microspheres-prepared by Pitting corrosion of CI powder immersed into corrosive solution at different concentrations and for different periods of time-was investigated by scanning electron microscope (SEM). The complex permittivity, permeability and microwave absorption properties of the composite are studied in the frequency range of 8.5-12.5 GHz with 30 wt% of composite in paraffin. The optimal reflection loss (RL) of -25.5 dB is observed at 11 GHz with a matching thickness of 2.0 mm and a bandwidth of 3.6 GHz. (C) 2018 Elsevier B.V. All rights reserved.
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