High-performance cobalt-embedded SiC nanofiber fabric for microwave dissipation

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2024-10-21 DOI:10.1016/j.coco.2024.102131

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引用次数: 0

Abstract

The incorporation of magnetic ingredients is critical for ceramic-based microwave absorbers with high efficiency. However, this task is becoming challenging due to the dispersion and oxidation issues. In this study, metal-organic framework (MOF) ZIF-67 was employed as the precursor of magnetic compounds and combined with a polymer solution to fabricate SiC textiles using the electrospinning technique. The microstructure analysis confirmed the successful introduction of MOF particles within the SiC nanofibers. Further examination of chemical compositions and magnetic properties revealed the encapsulation of magnetic compounds in hybrid SiC textiles. Since the applied fabrication approach ensures a superior dispersion and protection of metal compounds in a ceramic matrix, the microwave absorption of SiC fabric with both dielectric loss and magnetic loss exhibits a high reflection loss of −59.4 dB and a wide effective absorption band of 5.70 GHz. The current fabrication strategy for fabricating microwave absorbers with dual loss mechanisms advances the development of ceramic-based microwave absorption materials.

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用于微波消散的高性能嵌钴碳化硅纳米纤维织物

磁性成分的加入对于陶瓷基微波吸收器的高效率至关重要。然而，由于分散和氧化问题，这项任务正变得越来越具有挑战性。本研究采用金属有机框架（MOF）ZIF-67 作为磁性化合物的前体，并将其与聚合物溶液相结合，利用电纺丝技术制造碳化硅纺织品。微观结构分析证实，在碳化硅纳米纤维中成功引入了 MOF 颗粒。对化学成分和磁性能的进一步研究表明，混合碳化硅纺织品中封装了磁性化合物。由于所采用的制造方法确保了金属化合物在陶瓷基质中的出色分散和保护，同时具有介电损耗和磁损耗的 SiC 织物的微波吸收表现出 -59.4 dB 的高反射损耗和 5.70 GHz 的宽有效吸收频带。目前用于制造具有双重损耗机制的微波吸收器的制造策略推动了陶瓷基微波吸收材料的发展。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.