In situ synthesis of Fe3O4 coated on iron-based magnetic microwave absorbing materials and the influence of oxide magnetic materials on microwave absorption mechanism

被引：36

作者：

Zhang, Lili ^{[1
]}

Liu, Yongxian ^{[1
]}

Wang, Lei ^{[1
]}

Chen, Yang ^{[1
]}

Shen, Shuqi ^{[1
]}

Chen, Changcai ^{[1
]}

Liang, Tongxiang ^{[1
]}

机构：

[1] Jiangxi Univ Sci & Technol, Coll Rare Earths, Jiangxi Key Lab Rare Earth Magnet Mat & Devices, Ganzhou 341000, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2023年 / 49卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Absorbing materials; Core-shell structure; Oxide magnetic materials; Impedance matching; NANOSPHERES; COMPOSITES; EVOLUTION; ALLOY; TUBES;

D O I：

10.1016/j.ceramint.2022.12.170

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Fe3O4 coated iron-based magnetic microwave absorbing materials were prepared by heat treatment in controllable oxygen atmosphere. The obtained core-shell microstructure improved the absorbing properties by enhancing the dielectric loss capability and optimizing the impedance matching. The effective absorption bandwidth (nearly reach -20 dB) of the composite material covers 3-18 GHz by adjusting the coating thickness from 1.5 similar to 5.0 mm. The shell Fe3O4 improves the microwave absorbing properties and broadens the effective absorption frequency band of the iron-based material. In addition, the oxide layer improves the stability and environmental adaptability of the iron-based materials, which would provide reference idea for iron-based absorbing materials in industrial production.

引用

页码：12972 / 12979

页数：8

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