期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 900, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.163485
关键词
Microwave; Porous carbon; Ni-Zn ferrite; Composite carbon material
资金
- National Natural Science Foundation of China [21776299, 21576281]
- China Coal Industry Association Scientific and Technological Guidance Project [MTKJ2015-220, MTKJ2012-288]
- China University of Mining and Technology Teaching Reform Project for Postgraduate Education [YJSJG-2018-01, 2019YJSJG043]
CPC-loaded Ni-Zn ferrite composites prepared by microwave solid-phase reaction exhibit excellent wave absorption properties that can meet the requirements of multiple frequency bands.
Composites obtained from coal-based porous carbon (CPC)-loaded Ni-Zn ferrite often have good wave absorption properties. Here, CPC/Ni0.8Zn0.2Fe2O4 composite was innovatively prepared by microwave solidphase reaction. The effects of microwave power and time on the sintering of the Ni-Zn ferrite precursor powder were explored, as were the effects of the CPC pore structure and the mass ratio of CPC to Ni-Zn ferrite on the wave absorption properties of the composites. Results showed that the CPC matched well with the Ni-Zn ferrite, especially at a 50% ratio at which the composite attained a maximum attenuation of -20.8 dB at 15.2 GHz with an effective bandwidth of 4.4 GHz. The CPC broadened the wave absorption performance of Ni-Zn ferrite and the resulting composite had excellent wave absorption performance that could meet the requirements of multiple frequency bands by adjusting the coating thickness. (C) 2021 Elsevier B.V. All rights reserved.
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