Synthesis of Fe/SiO2 composite particles and their superior electromagnetic properties in microwave band

被引：36

作者：

Wei, X. J. ^{[1
]}

Jiang, J. T. ^{[1
]}

Zhen, L. ^{[1
]}

Gong, Y. X. ^{[1
]}

Shao, W. Z. ^{[1
]}

Xu, C. Y. ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

来源：

MATERIALS LETTERS | 2010年 / 64卷 / 01期

关键词：

Fe/SiO2; Sol-gel preparation; Nanocomposite; Microstructure; Electromagnetic properties; EMA performance; ABSORPTION PROPERTIES; PERMEABILITY;

D O I：

10.1016/j.matlet.2009.10.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fe/SiO2 composite particles were synthesized by hydrogen reduction of Fe2O3/SiO2 precursor, which was prepared by sol-gel method. A reduction temperature higher than 600 degrees C is required for the complete conversion of Fe2O3 to Fe. Fe/SiO2 composite particles exhibit superior complex permittivity and permeability in the microwave band. A reflection loss higher than -70 dB as well as a broad absorption band can be simultaneously obtained for Fe/SiO2-based coatings about 2 mm in thickness, suggesting that the Fe/SiO2 composite particles are a promising candidate for high performance electromagnetic absorption materials. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：57 / 60

页数：4

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