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Flexible Fe(3)Si/SiC ultrathin hybrid fiber mats with designable microwave absorption performance
Flexible Fe(3)Si/SiC ultrathin fiber mats have been fabricated by electrospinning and high temperature treatment (1400 °C) using polycarbosilane (PCS) and ferric acetylacetonate (Fe(acac)(3)) as precursors. The crystallization degree, flexibility, electrical conductivity, dielectric loss and microwa...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9086545/ https://www.ncbi.nlm.nih.gov/pubmed/35548844 http://dx.doi.org/10.1039/c8ra06941g |
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author | Hou, Yi Zhang, Yani Du, Xiaoqing Yang, Yong Deng, Chaoran Yang, Zhihong Zheng, Lianxi Cheng, Laifei |
author_facet | Hou, Yi Zhang, Yani Du, Xiaoqing Yang, Yong Deng, Chaoran Yang, Zhihong Zheng, Lianxi Cheng, Laifei |
author_sort | Hou, Yi |
collection | PubMed |
description | Flexible Fe(3)Si/SiC ultrathin fiber mats have been fabricated by electrospinning and high temperature treatment (1400 °C) using polycarbosilane (PCS) and ferric acetylacetonate (Fe(acac)(3)) as precursors. The crystallization degree, flexibility, electrical conductivity, dielectric loss and microwave absorption properties of the hybrid fibers have been dramatically enhanced by the introduction of Fe. Fe(3)Si nanoparticles with a diameter around 500 nm are embedded in SiC fibers. As the Fe(3)Si content increases from 0 to 6.5 wt%, the related saturation magnetization (M(s)) values increase from 0 to 8.4 emu g(−1), and the electrical conductivity rises from 7.9 × 10(−8) to 3.1 × 10(−3) S cm(−1). Moreover, the flexibility of Fe(3)Si/SiC hybrid fiber mats is greatly improved and remains intact after 500 times 180°-bending testing. Compared with pure SiC fibers, the Fe(3)Si/SiC hybrid fibers process higher dielectric and magnetic loss, which would be further advanced as more Fe(3)Si phase is introduced. At the optimal Fe(3)Si content of 3.8 wt%, the Fe(3)Si/SiC fibers/silicon resin composite (5 wt%) exhibits minimal reflection loss (RL) of −22.5 dB at 16.5 GHz and 2.5 mm thickness with a wide effective absorption bandwidth (EAB, RL < −10 dB) of 8.5 GHz. The microwave absorption performance can be further promoted by multi component stacking fiber mat composites which contain both low and high Fe(3)Si content layers. Furthermore, the position of the microwave absorption bands can also be simply manipulated by designing the stacking components and structure. |
format | Online Article Text |
id | pubmed-9086545 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90865452022-05-10 Flexible Fe(3)Si/SiC ultrathin hybrid fiber mats with designable microwave absorption performance Hou, Yi Zhang, Yani Du, Xiaoqing Yang, Yong Deng, Chaoran Yang, Zhihong Zheng, Lianxi Cheng, Laifei RSC Adv Chemistry Flexible Fe(3)Si/SiC ultrathin fiber mats have been fabricated by electrospinning and high temperature treatment (1400 °C) using polycarbosilane (PCS) and ferric acetylacetonate (Fe(acac)(3)) as precursors. The crystallization degree, flexibility, electrical conductivity, dielectric loss and microwave absorption properties of the hybrid fibers have been dramatically enhanced by the introduction of Fe. Fe(3)Si nanoparticles with a diameter around 500 nm are embedded in SiC fibers. As the Fe(3)Si content increases from 0 to 6.5 wt%, the related saturation magnetization (M(s)) values increase from 0 to 8.4 emu g(−1), and the electrical conductivity rises from 7.9 × 10(−8) to 3.1 × 10(−3) S cm(−1). Moreover, the flexibility of Fe(3)Si/SiC hybrid fiber mats is greatly improved and remains intact after 500 times 180°-bending testing. Compared with pure SiC fibers, the Fe(3)Si/SiC hybrid fibers process higher dielectric and magnetic loss, which would be further advanced as more Fe(3)Si phase is introduced. At the optimal Fe(3)Si content of 3.8 wt%, the Fe(3)Si/SiC fibers/silicon resin composite (5 wt%) exhibits minimal reflection loss (RL) of −22.5 dB at 16.5 GHz and 2.5 mm thickness with a wide effective absorption bandwidth (EAB, RL < −10 dB) of 8.5 GHz. The microwave absorption performance can be further promoted by multi component stacking fiber mat composites which contain both low and high Fe(3)Si content layers. Furthermore, the position of the microwave absorption bands can also be simply manipulated by designing the stacking components and structure. The Royal Society of Chemistry 2018-09-28 /pmc/articles/PMC9086545/ /pubmed/35548844 http://dx.doi.org/10.1039/c8ra06941g Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Hou, Yi Zhang, Yani Du, Xiaoqing Yang, Yong Deng, Chaoran Yang, Zhihong Zheng, Lianxi Cheng, Laifei Flexible Fe(3)Si/SiC ultrathin hybrid fiber mats with designable microwave absorption performance |
title | Flexible Fe(3)Si/SiC ultrathin hybrid fiber mats with designable microwave absorption performance |
title_full | Flexible Fe(3)Si/SiC ultrathin hybrid fiber mats with designable microwave absorption performance |
title_fullStr | Flexible Fe(3)Si/SiC ultrathin hybrid fiber mats with designable microwave absorption performance |
title_full_unstemmed | Flexible Fe(3)Si/SiC ultrathin hybrid fiber mats with designable microwave absorption performance |
title_short | Flexible Fe(3)Si/SiC ultrathin hybrid fiber mats with designable microwave absorption performance |
title_sort | flexible fe(3)si/sic ultrathin hybrid fiber mats with designable microwave absorption performance |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9086545/ https://www.ncbi.nlm.nih.gov/pubmed/35548844 http://dx.doi.org/10.1039/c8ra06941g |
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