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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...

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Detalles Bibliográficos
Autores principales: Sun, Xiaogang, Liu, Yi, Kuang, Daitao, Lu, Jun, Yang, Junyi, Peng, Xiaomin, Wu, Anru
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
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.
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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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