无机材料学报 ›› 2024, Vol. 39 ›› Issue (1): 71-80.DOI: 10.15541/jim20230333
陈海燕1(), 唐志鹏1, 尹良君1(), 张林博1(), 徐鑫2
收稿日期:
2023-07-24
修回日期:
2023-09-19
出版日期:
2024-01-20
网络出版日期:
2023-10-07
通讯作者:
尹良君, 副教授. E-mail: ylj@mail.ustc.edu.cn;作者简介:
陈海燕(1976-), 男, 研究员. E-mail: chenhy@uestc.edu.cn
基金资助:
CHEN Haiyan1(), TANG Zhipeng1, YIN Liangjun1(), ZHANG Linbo1(), XU Xin2
Received:
2023-07-24
Revised:
2023-09-19
Published:
2024-01-20
Online:
2023-10-07
Contact:
YIN Liangjun, associate professor. E-mail: ylj@mail.ustc.edu.cn;About author:
CHEN Haiyan (1976-), male, professor. E-mail: chenhy@uestc.edu.cn
Supported by:
摘要:
随着5G无线通信与低频雷达侦察技术的飞速发展, 低频电磁波辐射已成为当代的严重问题。目前, 中高频段吸波材料的研究已趋于成熟, 而设计低频段吸波材料仍面临巨大的挑战, 亟待研究者们解决。基于四分之一波长相消机制, 本研究设计了0.5~3 GHz低频段复合吸波材料。采用简单的一步水热法, 诱导铁氧体在羰基铁粉与碳纳米管表面生长, 制备出CIPs@Mn0.8Zn0.2Fe2O4-CNTs三元复合材料, 对比研究了碳纳米管含量对材料吸收峰频率的影响。实验结果表明, 引入碳纳米管, 一方面为材料带来了界面极化、偶极极化等额外的损耗机制, 增加了材料的衰减系数; 另一方面基于四分之一波长相消机制, 高介电与高磁导率的耦合, 使材料在低频段获得良好的阻抗匹配。最终, 在4 mm厚度下, 样品分别在2.11与1.75 GHz处, 获得了-40.8与-32.1 dB的反射损耗, -10 dB带宽分别为1.70~2.70 GHz和1.40~2.20 GHz。该复合材料制备工艺简单, 低频吸收性能良好, 具有很大的应用潜力, 为开发更有效的低频吸波材料提供了新的思路和方法。
中图分类号:
陈海燕, 唐志鹏, 尹良君, 张林博, 徐鑫. CIPs@Mn0.8Zn0.2Fe2O4-CNTs复合材料低频吸波性能研究[J]. 无机材料学报, 2024, 39(1): 71-80.
CHEN Haiyan, TANG Zhipeng, YIN Liangjun, ZHANG Linbo, XU Xin. Low-frequency Microwave Absorption of CIPs@Mn0.8Zn0.2Fe2O4-CNTs Composites[J]. Journal of Inorganic Materials, 2024, 39(1): 71-80.
图8 样品的损耗能力分析
Fig. 8 Analyses of loss capacities of samples (a-d) Cole-Cole curves; (e) Eddy current loss curves; (f) Attenuation constant curves; Colorful figures are available on website
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