文章信息/Info

Title:

Radar Wave Absorption Mechanism of the Flake�睸haped��FeSiAl Particle Composite

作者:

王濤; 位建強; 張釗琦; 李發(fā)伸

（蘭州大學 磁學與磁性材料教育部重點實驗室，甘肅 蘭州 730000）

Author(s):

WANG Tao;  WEI Jianqiang;  ZHANG Zhaoqi;  LI Fashen

(Key Laboratory of Magnetism and Magnetic Materials of Ministry of Education,��Lanzhou University, Lanzhou 730000， China)

關鍵詞:

雷達波吸收; 片形FeSiAl磁粉; 吸收峰峰值頻率; 吸收峰強度; 吸收峰寬度

DOI:

10.7502/j.issn.1674-3962.2013.02.04

文獻標志碼:

A

Abstract:

Radar wave absorption materials have been widely used in electron devices working in microwave frequency to avoid the electromagnetic wave interference and in military equipments to prevent the detection of radar wave. High performance radar wave absorption materials require a high permeability and appropriate permittivity in GHz range. Due to that the flake�瞫haped FeSiAl powder has the superior soft magnetic properties and possesses the high permeability and appropriate permittivity in GHz range, its composite has been widely used as radar wave absorber with high performance. In this work, the flake�瞫haped FeSiAl/paraffin composites with various volume concentration and thickness were prepared. Their electromagnetic parameters in 0 1~18 GHz were measured by VNA. Their radar wave reflection properties at the air�瞐bsorber interface and absorber�瞞etal plate interface and the reflection loss properties were studied by measuring the S 11 coefficients with and without a terminated metal plate. According to the measured S 11  coefficients and the simulation data, the relationship between the frequency position of the reflection loss (RL) peak and the absorber thickness was confirmed directly, and furthermore, the intensity and bandwidth of the RL peak were investigated deeply from viewpoint of their �﹐rigin�� on the base of interface reflection model.