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Enhanced anti-corrosion and microwave absorption performance with carbonyl iron modified by organic fluorinated chemicals

Magnetic absorbing materials suffer from corrosion and aging in harsh environments such as ocean and acid, which limits their practical applications. Therefore, it is important to design a material with excellent corrosion resistance and microwave absorption properties. Herein, perfluorooctyltrietho...

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Bibliographic Details
Main Authors: Xianyu, Jianga, Weihong, Wana, Bo, Wang
Format: Bài trích
Language:English
Published: Elsevier 2022
Subjects:
Carbonyl iron
PFOTES layer
Online Access:https://www.sciencedirect.com/science/article/abs/pii/S0169433221023734?via%3Dihub
https://dlib.phenikaa-uni.edu.vn/handle/PNK/5714
https://doi.org/10.1016/j.apsusc.2021.151320
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spelling oai:localhost:PNK-57142022-08-17T05:54:50Z Enhanced anti-corrosion and microwave absorption performance with carbonyl iron modified by organic fluorinated chemicals Xianyu, Jianga Weihong, Wana Bo, Wang Carbonyl iron PFOTES layer Magnetic absorbing materials suffer from corrosion and aging in harsh environments such as ocean and acid, which limits their practical applications. Therefore, it is important to design a material with excellent corrosion resistance and microwave absorption properties. Herein, perfluorooctyltriethoxysilane (PFOTES) modified carbonyl iron (CI) with tunable PFOTES content was prepared by the sol–gel method. The presence of PFOTES layer improved the corrosion resistance and microwave absorption of CI. The good hydrophobicity of PFOTES layer with the static contact angle of 129.73° hindered the contact of corrosive medium with CI core. The corrosion current of CI@PFOTES composite decreased significantly, and the corrosion rate was reduced by three orders of magnitude. The surface coating not only affected the electromagnetic parameters of carbonyl iron, but also improved the impedance matching of materials. Electromagnetic performance test results demonstrated that the microwave absorption performance of CI@PFOTES composite was better than that of carbonyl iron, and its minimum reflection loss was − 40.45 dB at 4.08 GHz with a matching thickness of 3.5 mm. Our work provides a new perspective for preparing composites with good microwave absorption and corrosion resistance in practical applications 2022-05-05T07:26:10Z 2022-05-05T07:26:10Z 2022 Bài trích https://www.sciencedirect.com/science/article/abs/pii/S0169433221023734?via%3Dihub https://dlib.phenikaa-uni.edu.vn/handle/PNK/5714 https://doi.org/10.1016/j.apsusc.2021.151320 en Elsevier
institution Digital Phenikaa
collection Digital Phenikaa
language English
topic Carbonyl iron
PFOTES layer
spellingShingle Carbonyl iron
PFOTES layer
Xianyu, Jianga
Weihong, Wana
Bo, Wang
Enhanced anti-corrosion and microwave absorption performance with carbonyl iron modified by organic fluorinated chemicals
description Magnetic absorbing materials suffer from corrosion and aging in harsh environments such as ocean and acid, which limits their practical applications. Therefore, it is important to design a material with excellent corrosion resistance and microwave absorption properties. Herein, perfluorooctyltriethoxysilane (PFOTES) modified carbonyl iron (CI) with tunable PFOTES content was prepared by the sol–gel method. The presence of PFOTES layer improved the corrosion resistance and microwave absorption of CI. The good hydrophobicity of PFOTES layer with the static contact angle of 129.73° hindered the contact of corrosive medium with CI core. The corrosion current of CI@PFOTES composite decreased significantly, and the corrosion rate was reduced by three orders of magnitude. The surface coating not only affected the electromagnetic parameters of carbonyl iron, but also improved the impedance matching of materials. Electromagnetic performance test results demonstrated that the microwave absorption performance of CI@PFOTES composite was better than that of carbonyl iron, and its minimum reflection loss was − 40.45 dB at 4.08 GHz with a matching thickness of 3.5 mm. Our work provides a new perspective for preparing composites with good microwave absorption and corrosion resistance in practical applications
format Bài trích
author Xianyu, Jianga
Weihong, Wana
Bo, Wang
author_facet Xianyu, Jianga
Weihong, Wana
Bo, Wang
author_sort Xianyu, Jianga
title Enhanced anti-corrosion and microwave absorption performance with carbonyl iron modified by organic fluorinated chemicals
title_short Enhanced anti-corrosion and microwave absorption performance with carbonyl iron modified by organic fluorinated chemicals
title_full Enhanced anti-corrosion and microwave absorption performance with carbonyl iron modified by organic fluorinated chemicals
title_fullStr Enhanced anti-corrosion and microwave absorption performance with carbonyl iron modified by organic fluorinated chemicals
title_full_unstemmed Enhanced anti-corrosion and microwave absorption performance with carbonyl iron modified by organic fluorinated chemicals
title_sort enhanced anti-corrosion and microwave absorption performance with carbonyl iron modified by organic fluorinated chemicals
publisher Elsevier
publishDate 2022
url https://www.sciencedirect.com/science/article/abs/pii/S0169433221023734?via%3Dihub
https://dlib.phenikaa-uni.edu.vn/handle/PNK/5714
https://doi.org/10.1016/j.apsusc.2021.151320
_version_ 1751856278908436480
score 8.891053

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