多元助剂改性羰基铁粉雷达波低频吸波性能研究

doi:10.11896/j.issn.1005-023X.2018.04.002

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Abstract Three kinds of treatment agents were used to modify the surface of carbonyl iron powder samples,and the effect of compound auxiliary agents on microstructure and electromagnetic parameters of carbonyl iron powder samples after surface modification were studied. The results showed that a layer dense and uniform organic insulating film was formed on the surface of carbonyl iron powder by applying the compound auxiliary agents, which could reduce the permittivity of carbonyl iron powder effectively,increase the imaginary permeability,enhance the electromagnetic matching performance of absorbing materials and ameliorate the low frequency absorption effect of absorber. According to the transmission line theory,the reflection loss (RL) of absorbing material was calculated.When the thickness was 2 mm,the reflection loss peak reached -15 dB near 2 GHz for carbonyl iron powder modified by three kinds of auxiliary agents, the effective absorption bandwidth was 1 GHz (1.6-2.6 GHz) when the RL<-10 dB.It indicated that the carbonyl iron powder had preferable low frequency absorbing performance for radar wave.

Key words： surface modification electromagnetic parameter electromagnetic matching reflection loss

Published: 25 February 2018

CLC number:

TB34

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	Articles by authors
	HU Jing
	XIE Guozhi
	GU Jiaxin
	CHEN Jing
	TAN Xin
	WANG Rui
	XING Beibei

Cite this article:

HU Jing,XIE Guozhi,GU Jiaxin, et al. Low Frequency Radar Wave Absorbing Performance of Carbonyl Iron Powder Modified by Compound Auxiliary Agents[J]. Materials Reports, 2018, 32(4): 520-524.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.04.002 OR http://www.mater-rep.com/EN/Y2018/V32/I4/520

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