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Hard Carbon Embedded with FeSiAl Flakes for Improved Microwave Absorption Properties
Carbon-based composites have been proven to be strong candidates for microwave absorbers in recent years. However, as an important member, magnetic hard carbon (HC)-based composites have rarely been studied in the field of microwave absorption. In this study, HC embedded with FeSiAl (FeSiAl@HC) was...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9457624/ https://www.ncbi.nlm.nih.gov/pubmed/36079447 http://dx.doi.org/10.3390/ma15176068 |
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author | Sun, Xiaogang Liu, Yi Kuang, Daitao Lu, Jun Yang, Junyi Peng, Xiaomin Wu, Anru |
author_facet | Sun, Xiaogang Liu, Yi Kuang, Daitao Lu, Jun Yang, Junyi Peng, Xiaomin Wu, Anru |
author_sort | Sun, Xiaogang |
collection | PubMed |
description | Carbon-based composites have been proven to be strong candidates for microwave absorbers in recent years. However, as an important member, magnetic hard carbon (HC)-based composites have rarely been studied in the field of microwave absorption. In this study, HC embedded with FeSiAl (FeSiAl@HC) was synthesized by pyrolyzing a mixture of FeSiAl flakes and phenolic resin (PR). The as-synthesized HC-FeSiAl exhibited a layered structure, and the detailed microstructures were modified by changing the mass ratio of FeSiAl flakes and PR. Thus, the as-synthesized HC-FeSiAl exhibited tunable magnetic properties, wealthy functional groups, excellent thermal stability, and enhanced microwave absorption properties. The optimal minimum reflection loss is lower up to −36.1 dB, and the effective absorption bandwidth is wider up to 11.7 GHz. These results indicated that HC-FeSiAl should be a strong candidate for practical applications of microwave absorption, which may provide new insight into the synthesis of magnetic HC-based composites. |
format | Online Article Text |
id | pubmed-9457624 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-94576242022-09-09 Hard Carbon Embedded with FeSiAl Flakes for Improved Microwave Absorption Properties Sun, Xiaogang Liu, Yi Kuang, Daitao Lu, Jun Yang, Junyi Peng, Xiaomin Wu, Anru Materials (Basel) Article Carbon-based composites have been proven to be strong candidates for microwave absorbers in recent years. However, as an important member, magnetic hard carbon (HC)-based composites have rarely been studied in the field of microwave absorption. In this study, HC embedded with FeSiAl (FeSiAl@HC) was synthesized by pyrolyzing a mixture of FeSiAl flakes and phenolic resin (PR). The as-synthesized HC-FeSiAl exhibited a layered structure, and the detailed microstructures were modified by changing the mass ratio of FeSiAl flakes and PR. Thus, the as-synthesized HC-FeSiAl exhibited tunable magnetic properties, wealthy functional groups, excellent thermal stability, and enhanced microwave absorption properties. The optimal minimum reflection loss is lower up to −36.1 dB, and the effective absorption bandwidth is wider up to 11.7 GHz. These results indicated that HC-FeSiAl should be a strong candidate for practical applications of microwave absorption, which may provide new insight into the synthesis of magnetic HC-based composites. MDPI 2022-09-01 /pmc/articles/PMC9457624/ /pubmed/36079447 http://dx.doi.org/10.3390/ma15176068 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Sun, Xiaogang Liu, Yi Kuang, Daitao Lu, Jun Yang, Junyi Peng, Xiaomin Wu, Anru Hard Carbon Embedded with FeSiAl Flakes for Improved Microwave Absorption Properties |
title | Hard Carbon Embedded with FeSiAl Flakes for Improved Microwave Absorption Properties |
title_full | Hard Carbon Embedded with FeSiAl Flakes for Improved Microwave Absorption Properties |
title_fullStr | Hard Carbon Embedded with FeSiAl Flakes for Improved Microwave Absorption Properties |
title_full_unstemmed | Hard Carbon Embedded with FeSiAl Flakes for Improved Microwave Absorption Properties |
title_short | Hard Carbon Embedded with FeSiAl Flakes for Improved Microwave Absorption Properties |
title_sort | hard carbon embedded with fesial flakes for improved microwave absorption properties |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9457624/ https://www.ncbi.nlm.nih.gov/pubmed/36079447 http://dx.doi.org/10.3390/ma15176068 |
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