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首页> 外文期刊>Applied Surface Science >Enhanced microwave absorption properties of carbon nanofibers functionalized by FeCo coatings
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Enhanced microwave absorption properties of carbon nanofibers functionalized by FeCo coatings

机译：增强了FeCO涂层官能化的碳纳米纤维的微波吸收性能

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摘要

Carbon nanofibers (CNFs) functionalized by ferromagnetic metals possess many potential applications in the microwave absorption. In this study, CNFs were functionalized by FeCo coatings with a DC-magnetron-sputtering method. The phase composition, microstructure, magnetic properties and electromagnetic wave absorbability of the new composites (FeCo/CNFs) have been studied. The obtained results demonstrate intensity magnetism in FeCo/CNFs, where the maximum saturation magnetization reaches up to 3.23 emu/g, and the minimum coercivity is 161.27 Oe. For the sample with a thickness of 4 mm, two absorption peaks located in the range of 3.81-4.36 GHz and 14.03-16.35 GHz can be observed. While the optimized reflection loss value of -24.05 dB was found at 14.88 GHz. Compared with the pristine CNFs, FeCo/CNFs exhibit stronger absorption and wider absorption band, because of the introduced FeCo coatings as well as the destructive interference between FeCo and CNFs. The method developed in this study will pave a new way for the development of CNF-based electromagnetic-wave absorbing materials.
机译：由铁磁金属官能化的碳纳米纤维（CNFS）具有许多在微波吸收中的潜在应用。在该研究中，CNF通过FECO涂层官能化，具有DC-磁控溅射法。研究了新复合材料（FECO / CNFS）的相组合物，微观结构，磁性和电磁波吸收性。所得结果在FECO / CNF中展示了强度磁性，其中最大饱和磁化强度达到3.23埃姆/ g，最小矫顽力为161.27°OE。对于厚度为4mm的样品，可以观察到位于3.81-4.36GHz和14.03-16.35GHz范围内的两个吸收峰。虽然在14.88GHz中发现了-24.05 dB的优化反射损耗值。与原始CNFS相比，FECO / CNFS表现出更强的吸收和宽吸收带，因为引入的FECO涂层以及FECO和CNF之间的破坏性干扰。本研究中开发的方法将为基于CNF的电磁波吸收材料进行铺平的新方法。

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  • 来源
    《Applied Surface Science》 |2019年第31期|98-105|共8页
  • 作者

    Huang Ben; Yue Jianling; Wei Yongshan; Huang Xiaozhong; Tang Xiuzhi; Du Zuojuan;

  • 作者单位

    Cent S Univ Sch Aeronaut & Astronaut Hunan Key Lab Adv Fibers & Composites Changsha 410083 Hunan Peoples R China;

    Cent S Univ Sch Aeronaut & Astronaut Hunan Key Lab Adv Fibers & Composites Changsha 410083 Hunan Peoples R China;

    Shenzhen Univ Coll Mat Sci & Engn Shenzhen 518060 Peoples R China;

    Cent S Univ Sch Aeronaut & Astronaut Hunan Key Lab Adv Fibers & Composites Changsha 410083 Hunan Peoples R China;

    Cent S Univ Sch Aeronaut & Astronaut Hunan Key Lab Adv Fibers & Composites Changsha 410083 Hunan Peoples R China;

    Cent S Univ Sch Aeronaut & Astronaut Hunan Key Lab Adv Fibers & Composites Changsha 410083 Hunan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Carbon nanofibers; Microwave absorption; Magnetic materials; Magnetron sputtering;

    机译：碳纳米纤维;微波吸收;磁性材料;磁控溅射;

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