MOF composite FeSiB-based nano-amorphous magnetic powder and the influence of porous morphology on dielectric polarization and microwave absorption mechanisms

被引:1
|
作者
Dong, Weiwei [1 ,2 ]
Wang, Lei [1 ,2 ,5 ]
Rehman, Sajjad Ur [1 ]
Chen, Changcai [1 ,5 ]
Zhang, Wenmiao [1 ,2 ]
Hu, Yifeng [1 ]
Zou, Haiping [1 ,2 ,3 ]
Liang, Tongxiang [1 ]
Zou, Jianping [1 ,4 ]
机构
[1] Jiangxi Univ Sci & Technol, Coll Rare Earths, Ganzhou 341000, Peoples R China
[2] Jiangxi QianYue New Mat Co Ltd, Ganzhou 341003, Peoples R China
[3] Hejun Coll, Ganzhou 342600, Peoples R China
[4] Nanchang Hangkong Univ, Sch Environm & Chem Engn, Nanchang 330063, Peoples R China
[5] Jiangxi Prov Key Lab Magnet Met Mat & Devices, Ganzhou 341000, Peoples R China
基金
中国国家自然科学基金;
关键词
FeSiBNbCu nano-amorphous; MIL-101(Fe); Absorbing materials; FABRICATION; DEPENDENCE; GRAPHENE; DESIGN; OXIDE;
D O I
10.1016/j.jallcom.2024.177344
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
FeSiB-based nano-amorphous soft magnetic alloy composites have excellent wave-absorbing properties which are among the most promising high-performance wave-absorbing materials. FeSiBNbCu nano-amorphous soft magnetic alloy micropower was used as the matrix. Fe-based (MIL-101(Fe)) porous materials were grown on the lamellar amorphous surface by in situ composite method, which successfully prepared FeSiBNbCu@MIL-101(Fe) magnetic alloy micropower with excellent wave-absorbing properties. The porous nature of the MOF materials, enhanced interfacial polarization and multiple reflections and scatterings of the composites, and thus significantly improved microwave absorption properties of the materials. Furthermore, the introduction of the MOF materials reduced the electrical conductivity of the materials and optimized the impedance matching. The reflection loss minima (RLmin) of the composites reached -71.29 dB (d= 4.4 mm, f=4.74 GHz) and -63.23 dB (d= 2.4 mm, f=10.35 GHz) at 10 wt% and 20 wt% MIL-101(Fe), respectively, and the effective absorption bandwidths, of RL <= - 20 dB (1.4 GH and 1.3 GHz), are broadened obviously in the range of d=2.5 mm similar to 3.5 mm.
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页数:12
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  • [1] MOF composite FeSiB-based nano-amorphous magnetic powder and the influence of porous morphology on dielectric polarization and microwave absorption mechanisms
    Dong, Weiwei
    Wang, Lei
    Rehman, Sajjad Ur
    Chen, Changcai
    Zhang, Wenmiao
    Hu, Yifeng
    Zou, Haiping
    Liang, Tongxiang
    Zou, Jianping
    Journal of Alloys and Compounds, 1600, Elsevier Ltd (1010):