期刊
CERAMICS INTERNATIONAL
卷 47, 期 14, 页码 19582-19594出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2021.03.296
关键词
EMW absorption; In-situ generation; Impedance matching; Dielectric; Magnetic
资金
- Postdoctoral Research Foundation of China [2019M652441]
- Natural Science Foundation of Shandong Province [ZR2019BEM013]
SiCN(Fe) fibers with excellent one-dimensional microstructure and EMW absorption performance were synthesized using PDCs method and electrospinning. The in-situ generation of Fe3Si and CNTs by adding FA effectively improved the properties of the fibers. The EMW absorption of SiCN(Fe) fibers mainly relies on dipole polarization loss, interface polarization loss, and eddy current loss.
The SiCN(Fe) fibers with excellent one-dimensional microstructure and electromagnetic wave (EMW) absorption performance were synthesized by combining polymer-derived ceramics (PDCs) method and electrospinning. The in-situ generation of Fe3Si and CNTs by adding ferric acetylacetonate (FA) into the raw materials effectively improved the dielectric properties, magnetic properties and the impedance matching performance of the SiCN (Fe) fibers. The EMW absorption performance of SiCN(Fe) fibers were mainly based on dipole polarization loss, interface polarization loss and eddy current loss. The RLmin value of SiCN(Fe) fibers reached -47.64 dB at 1.38 mm and the effective absorption band (EAB, RL <= -10 dB) reached 4.28 GHz (13.72-18 GHz, 1.35 mm).
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