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用双碳修改的Co_0.7Fe_0.3的黄皮结构用于宽带微波吸收

Lizheng Meng¹, Jiahao Wang², Junyao Qi¹

¹State Key Laboratory of Photon-Technology in Western China Energy, Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710127, People's Republic of China.

Journal of colloid and interface science

|January 14, 2024

概括

研究人员开发了一种新的微波吸收器 (MA),在空心碳球中使用碳涂层CoFe. 这种材料具有出色的微波吸收性能,为高性能轻型吸收器提供了一条新的途径.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
电磁学电磁学电磁学电磁学

背景情况:

设计高效的微波吸收器 (MAs) 使用多组件材料和受控的微观结构仍然是一个重大挑战.
不同质的接口和协同的电磁特性对于先进的MA性能至关重要.

研究的目的:

为了合成一个具有独特的黄结构的高性能微波吸收器 (MA).
为了研究碳涂层CoFe的微波吸收特性,它被限制在空洞的中孔碳球中.

主要方法:

采用了一种涉及静电吸附和回火的轻易合成方法.
碳涂层的CoFe纳米颗粒被封装在空洞的半孔碳球中.
微波吸收性能通过测量反射损失和有效吸收带宽 (EAB) 来评估.

主要成果:

该Co$_{0.7}$Fe$_{0.3}$@C@void@C材料由于其异构,多孔形态和电磁协同作用,显示出出色的微波吸收能力.
在2.48毫米厚度,有效吸收带宽 (EAB) 为7.16GHz,填料负载为15%的重量,火温度为550°C.
在23.7毫米厚度的7.21 GHz的最大EAB在650°C的火中得到.
雷达截面实验证实了开发的MA的实际适用性.

结论:

Co$_{0.7}$Fe$_{0.3}$@C@void@C 蛋黄外结构有效地增强了微波吸收.
这项研究提出了一种新的战略,通过巧妙的微观结构设计来开发高性能,轻量级的微波吸收器.

关键词:

铁合金是一种铁合金.不同质的接口不同质的接口阻抗匹配的匹配方式微波吸收方式微波吸收方式黄的结构是黄的外结构.

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