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Open AccessArticle

The Preparation of FeCo/ZnO Composites and Enhancement of Microwave Absorbing Property by Two-Step Method

by Ka Gao 1,2,*, Junliang Zhao 1,2, Zhongyi Bai 1,2, Wenzheng Song 1,2 and Rui Zhang 1,2,3
1
School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou 450015, China
2
Henan Key Laboratory of Aeronautical Material and Application Technology, Zhengzhou 450015, China
3
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
*
Author to whom correspondence should be addressed.
Materials 2019, 12(19), 3259; https://doi.org/10.3390/ma12193259
Received: 22 August 2019 / Revised: 29 September 2019 / Accepted: 1 October 2019 / Published: 6 October 2019
(This article belongs to the Section Advanced Composites)
In this paper, the flower-like FeCo/ZnO composites were successfully firstly prepared by a two-step method, and their microstructures and microwave absorbing properties were characterized. The results show that with an increase of temperature, the content of ZnO loaded on a FeCo/ZnO composite surface was increased. The optimal reflection loss (RL) value can be reached around −53.81 dB at 9.8 GHz, which is obviously superior to results of previous studies and reports, and its effective bandwidth (RL < −10 dB) is 3.8 GHz in the frequency range of 8.7–11.8 GHz with a matching thickness of 1.9 mm. We considered that a large number of lamellar and rod-like ZnO loaded on nano-FeCo single-phase solid solution by two-step method can significantly improve the electromagnetic wave absorption properties. View Full-Text
Keywords: two-step method; FeCo/ZnO composite; microstructure; absorption property two-step method; FeCo/ZnO composite; microstructure; absorption property
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MDPI and ACS Style

Gao, K.; Zhao, J.; Bai, Z.; Song, W.; Zhang, R. The Preparation of FeCo/ZnO Composites and Enhancement of Microwave Absorbing Property by Two-Step Method. Materials 2019, 12, 3259.

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