scholarly journals Study on wave absorption properties of carbonyl iron and SiO2 coated carbonyl iron particles

AIP Advances ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 065322 ◽  
Author(s):  
Honghao Yan ◽  
Xinhua Song ◽  
Yang Wang
Keyword(s):  
Carbonyl Iron ◽  
Iron Particles ◽  
Absorption Properties ◽  
Wave Absorption

Graphene–carbonyl iron cross-linked composites with excellent electromagnetic wave absorption properties

2014 ◽  
Vol 2 (32) ◽  
pp. 6582-6591 ◽  
Author(s):  
Zetao Zhu ◽  
Xin Sun ◽  
Hairong Xue ◽  
Hu Guo ◽  
Xiaoli Fan ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Carbonyl Iron ◽  
Framework Structure ◽  
Absorption Properties ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
The Cross ◽  
Absorbing Property

A carbon-bridge effect was adopted to explain the electromagnetic wave absorbing property related to the cross-linked framework structure of RGO–SCI composites.

Synthesis, dielectric, and microwave absorption properties of flake carbonyl iron particles coated with nanostructure polymer

2013 ◽  
Vol 46 (2) ◽  
pp. 77-82 ◽  
Author(s):  
Zhenjiang Song ◽  
Longjiang Deng ◽  
Jianliang Xie ◽  
Peiheng Zhou ◽  
Haipeng Lu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Carbonyl Iron ◽  
Iron Particles ◽  
Absorption Properties ◽  
Microwave Absorption Properties

scholarly journals Enhanced Electromagnetic Wave Absorption Properties of Ultrathin MnO2 Nanosheet-Decorated Spherical Flower-Shaped Carbonyl Iron Powder

Molecules ◽  
2021 ◽  
Vol 27 (1) ◽  
pp. 135
Author(s):  
Zhengwei Qu ◽  
Yi Wang ◽  
Pingan Yang ◽  
Wei Zheng ◽  
Nan Li ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Iron Powder ◽  
Oxidation Resistance ◽  
Reflection Loss ◽  
Carbonyl Iron ◽  
Absorption Properties ◽  
Absorption Bandwidth ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Minimum Reflection Loss

In this work, spherical flower-shaped composite carbonyl iron powder@MnO2 (CIP@MnO2) with CIP as the core and ultrathin MnO2 nanosheets as the shell was successfully prepared by a simple redox reaction to improve oxidation resistance and electromagnetic wave absorption properties. The microwave-absorbing properties of CIP@MnO2 composites with different filling ratios (mass fractions of 20%, 40%, and 60% after mixing with paraffin) were tested and analyzed. The experimental results show that compared with pure CIP, the CIP@MnO2 composites have smaller minimum reflection loss and a wider effective absorption bandwidth than CIP (RL < −20 dB). The sample filled with 40 wt% has the best comprehensive performance, the minimum reflection loss is −63.87 dB at 6.32 GHz, and the effective absorption bandwidth (RL < −20 dB) reaches 7.28 GHz in the range of 5.92 GHz–9.28 GHz and 11.2 GHz–15.12 GHz, which covers most C and X bands. Such excellent microwave absorption performance of the spherical flower-like CIP@MnO2 composites is attributed to the combined effect of multiple beneficial components and the electromagnetic attenuation ability generated by the special spherical flower-like structure. Furthermore, this spherical flower-like core–shell shape aids in the creation of discontinuous networks, which improve microwave incidence dispersion, polarize more interfacial charges, and allow electromagnetic wave absorption. In theory, this research could lead to a simple and efficient process for producing spherical flower-shaped CIP@MnO2 composites with high absorption, a wide band, and oxidation resistance for a wide range of applications.

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