铁镍合金粉包覆改性及其吸波性能研究

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材料工程 ›› 2008, Vol. 0 ›› Issue (2) : 54-57.

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工艺

铁镍合金粉包覆改性及其吸波性能研究

邹科^1,2, 杨东方², 马向东¹

作者信息 +

Surface Modification of FeNi Powders and Its Microwave Absorbing Property

ZOU Ke^1,2, YANG Dongfang², MA Xiangdong¹

Author information +

文章历史 +

摘要

铁镍合金粉用正硅酸乙酯(TEOS)改性,采用红外漫反射光谱、透射电镜、扫描电镜、矢量网络分析仪等对改性后的铁镍合金粉结构和性能进行表征。研究结果表明:处理后的铁镍合金粉为有机硅包裹的结构;包覆后铁镍合金粉在2~18GHz内

均降低。在3.2~18GHz内,随着TEOS浓度的增加,

先增加后降低。分散处理能有效减少包覆后铁镍合金粉的团聚,进一步降低其介电常数。

Abstract

Tetraethylorthosilicate(TEOS) was used to modify FeNi powders.The structures of FeNi powders were characterized by means of diffuse reflectance infrared fourier transform(DRIFT),scanning electron microscope(SEM),transmission electron microscope(TEM).The electromagnetic parameters of FeNi powders were tested by network vectorial analysis instrument.The results show that a polymer layer of TEOS was obtained on the FeNi powders surface.Both real part and imaginary part of permittivity of FeNi powders could be lowered by TEOS treatment in the frequency range of(2-18) GHz.As increasing volume content of TEOS,the real part of permeability increased first and then decreased in the frequency range of 3.2-18 GHz.The agglomeration of FeNi powders could be reduced by dispersion and its permittivity decreased greatly.

导出引用

邹科, 杨东方, 马向东. 铁镍合金粉包覆改性及其吸波性能研究[J]. 材料工程, 2008, 0(2): 54-57

ZOU Ke, YANG Dongfang, MA Xiangdong. Surface Modification of FeNi Powders and Its Microwave Absorbing Property[J]. Journal of Materials Engineering, 2008, 0(2): 54-57

中图分类号： TM25

参考文献

[1] 盛玉宝,王相元,钱鉴,等.羰基铁粉介电常数调控与控制[J].宇航材料工艺,1989,(4):50-51.
[2] 余洪斌,赵振声,聂彦,等.一种多晶铁纤维的表面包覆方法[J].表面技术,2002,31(1):45-47.
[3] 王琦,官建国,王维,等.ZnO包覆FeO.7NiO.3对电磁参数的影响[J].材料科学与工艺,2005,13(3):321-324.
[4] 邓惠勇,官建国,甘治平.环氧树脂包裹超微铁磁性复合粒子电磁参数的研究[J].功能材料,2003,34(6):719-720.
[5] PU Hong-ting,JIANG Feng-jing,YANG Zheng-long.Studies on preparation and chemical stability of reduced iron particles encapsulated with polysiloxane nano-films[J].Materials Letters,2006,60(1):94-97.
[6] 王其祥.超细金属磁性记录粉体表面性质研究[D].北京:中国科学院过程工程研究所博士学位论文,2001,77-78.
[7] WUA L Z,DINGA J,JIANGA H B,et al.Particle size influence to the microwave properties of iron based magnetic particulate composites[J].Journal of Magnetism and Magnetic Materials,2005,285(2):233-239.
[8] 倪刚.纳米磁性颗粒系统的输运性质、微结构和磁谱的研究[D].南京:南京大学博士学位论文.2001,82-89.
[9] NAKUMURA T,TSUTAOKA T,HATAKEYAMA K.Frequency dispersion of permeability in ferrite composite materials[J].Journal of Magnetism and Magnetic Materials,1994,138(3):319-328.