钴
微波食品加热
吸收(声学)
联轴节(管道)
材料科学
碳酸盐
铁
无机化学
化学工程
化学
冶金
复合材料
物理
量子力学
工程类
作者
Yupeng Zou,Yu Ma,Lingsai Meng,Shengxiang Xiong,Lijuan Cai,Gang Chen,Chengjun Dong,Hongtao Guan
标识
DOI:10.1016/j.materresbull.2024.112838
摘要
In this work, reduced graphene oxide (RGO)-based composites loaded with magnetic CoFe2O4 (CFO) and CoFe were successfully synthesized via heat treatment of basic ferric cobalt carbonate (BFCC) under different temperatures. The impact of adding CFO and CoFe on the electromagnetic parameters and absorption properties was investigated. When 40 wt% CFO flakes and CoFe particles are added to the RGO matrix and the filler content is 20 wt% in paraffin, there gives a reflection loss of −48 dB with a 5.5 GHz absorption bandwidth at 2.1 mm thickness, and −50 dB with 4.8 GHz at 2.9 mm, respectively. The coupling of a magnetic medium can change the electromagnetic loss mechanism in the material, which ultimately affects the absorption properties of the material. This study provides a good basis for the design of composite materials of RGO as microwave absorbing materials, enabling large-scale production of high-performance absorption materials.
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