Magnetic sputtering of FeNi/C bilayer film on SiC fibers for effective microwave absorption in the low-frequency region

It is a great challenge in promoting a microwave absorber with excellent absorbing properties in the low-frequency region. Herein, SiC fibers (SiCf) coated by a bilayer of FeNi/C (SiCf/FeNi/C) are fabricated via a two-step magnetron sputtering method. Owing to the improved dielectric loss, magnetic...

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Bibliographic Details
Published inCeramics international Vol. 47; no. 4; pp. 5221 - 5226
Main Authors Guo, Tong, Huang, Ben, Li, Changgeng, Lou, Yumin, Tang, Xiu-Zhi, Huang, Xiaozhong, Yue, Jianling
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 15.02.2021
Subjects
Ceramic composites
Low-frequency
Magnetron sputtering
Microwave absorption
Multilayer structure
Magnetron sputtering
Microwave absorption
Ceramic composites
Low-frequency
Multilayer structure
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Summary:It is a great challenge in promoting a microwave absorber with excellent absorbing properties in the low-frequency region. Herein, SiC fibers (SiCf) coated by a bilayer of FeNi/C (SiCf/FeNi/C) are fabricated via a two-step magnetron sputtering method. Owing to the improved dielectric loss, magnetic loss, and impedance matching, the reflection loss of SiCf/FeNi/C is remarkably enhanced. Accordingly, the minimum reflection loss of SiCf/FeNi/C reaches −26.18 dB at a low-frequency region of 3.44 GHz. Besides, the mechanic strength of SiCf/FeNi/C maintains at 2.32 GPa as compared to as-received SiCf. Thus, SiCf/FeNi/C is expected to be an ideal structure material to meet low-frequency microwave absorption requests.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2020.10.101