Fe 3 O 4 /C@SiC nanocomposite microwave absorbing material derived from MIL‐101(Fe)@SiC
The Fe 3 O 4 /C@SiC nanocomposites were synthesized by pyrolyzing MIL‐101(Fe)@SiC nanocomposites under Ar gas atmosphere. The magnetic Fe 3 O 4 enhances the magnetic loss of the composite material, while the abundant defects and voids on the surface of MIL‐101(Fe)‐derived porous carbon form a networ...
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Veröffentlicht in: | Journal of the American Ceramic Society 2024-05, Vol.107 (5), p.3290-3300 |
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Hauptverfasser: | , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | The Fe
3
O
4
/C@SiC nanocomposites were synthesized by pyrolyzing MIL‐101(Fe)@SiC nanocomposites under Ar gas atmosphere. The magnetic Fe
3
O
4
enhances the magnetic loss of the composite material, while the abundant defects and voids on the surface of MIL‐101(Fe)‐derived porous carbon form a network with SiC whiskers, extending the transmission path of electromagnetic waves. The synergistic effect of Fe
3
O
4
and porous carbon optimizes the impedance matching of the material and improves its attenuation capability. As a result, the Fe
3
O
4
/C@SiC nanocomposite exhibits excellent microwave absorption performance. Fe
3
O
4
/C@SiC nanocomposites about minimal reflection loss (RL
min
) of −80.11 dB at 5.93 GHz and an effective absorption bandwidth (RL −10 dB) of 3.57 GHz (4.33–7.90 GHz). The findings of this study shed light on the potential of SiC for microwave absorption applications. |
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ISSN: | 0002-7820 1551-2916 |
DOI: | 10.1111/jace.19636 |