Study on Electromagnetic and Microwave Absorption Properties of Carbonyl Iron Powder Coated by SiO

LIU Xiaotong; ZENG Yuansong; WEI Guoke; YIN Yichao; ZHANG Hang; GAO Lu

doi:10.16080/j.issn1671–833x.2019.22.082

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Study on Electromagnetic and Microwave Absorption Properties of Carbonyl Iron Powder Coated by SiO

更新时间：2025-10-30

- Study on Electromagnetic and Microwave Absorption Properties of Carbonyl Iron Powder Coated by SiO
- Aeronautical Manufacturing Technology Vol. 62, Issue 22, Pages: 82-87(2019)
- 作者机构：
  
  中国航空制造技术研究院,北京,100024
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671–833x.2019.22.082
  CLC：
- Published：2019
- 稿件说明：
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刘晓彤，曾元松，韦国科，尹贻超，张行，高路. SiO2包覆羰基铁粉电磁特性及吸波性能研究[J]. 航空制造技术, 2019, 62(22): 82-87.

LIU Xiaotong, ZENG Yuansong, WEI Guoke, YIN Yichao, ZHANG Hang, GAO Lu. Study on Electromagnetic and Microwave Absorption Properties of Carbonyl Iron Powder Coated by SiO2. Aeronautical Manufacturing Technology, 2019, 62(22): 82-87.
刘晓彤，曾元松，韦国科，尹贻超，张行，高路. SiO2包覆羰基铁粉电磁特性及吸波性能研究[J]. 航空制造技术, 2019, 62(22): 82-87. DOI： 10.16080/j.issn1671–833x.2019.22.082.

LIU Xiaotong, ZENG Yuansong, WEI Guoke, YIN Yichao, ZHANG Hang, GAO Lu. Study on Electromagnetic and Microwave Absorption Properties of Carbonyl Iron Powder Coated by SiO2. Aeronautical Manufacturing Technology, 2019, 62(22): 82-87. DOI： 10.16080/j.issn1671–833x.2019.22.082.

摘要

通过正硅酸乙酯（TEOS）水解，在羰基铁表面包覆SiO

，对其进行表面改性，研究表面包覆时间对电磁特性和吸波性能的影响。采用XRF、FT–IR 对样品的元素及化学键进行表征，使用TEM 分析样品表面形貌，确定包覆层厚度。利用矢量网络分析仪对样品的电磁参数进行测量，研究其吸波性能。结果表明：羰基铁表面包覆层厚度约为40~60nm，随包覆时间延长，包覆层厚度逐渐增加并致密；经模拟，包覆后同等厚度样品对电磁波的吸收峰向高频移动，频带宽度（R

≤–10dB）明显增加；包覆2h样品，反射损耗最小，最佳反射损耗值为–45.18dB，展现出了良好的吸波性能。

Abstract

In order to study the effect of surface coating time on electromagnetic properties and microwave absorbing properties

carbonyl iron was coated with SiO

by hydrolysis of tetraethyl orthosilicate (TEOS). The elements and chemical bonds of the samples were characterized by XRF and FT–IR

and the surface morphology of the samples was analyzed by TEM to determine the thickness of the coating. The electromagnetic parameters were measured by a vector network analyzer to study its absorbing properties. The results show that the surface coating thickness is about 40–60nm. With the coating time prolonged

the thickness of the coating layer gradually increases. After simulation

the absorption peak of the electromagnetic wave after coating is moved to a high frequen

band width (R

≤–10dB) increases significantly. The sample coated for 2h has the smallest reflection loss

the lowest peak value is – 45.18dB

which shows good absorbing performance.

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