片状羰基铁的负载量与尺寸对其吸波性能的影响

doi:10.19976/j.cnki.43-1448/TF.2026055

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Abstract Flake carbonyl iron (FCI)/paraffin composites exhibit excellent electromagnetic loss characteristics and show great potential for broadband microwave absorption applications. In this study, FCI powder was incorporated into molten paraffin via a melt-blending and compression-molding process to fabricate FCI/paraffin composites. The synergistic regulation mechanisms of FCI loading content and flake size on the electromagnetic wave absorption properties of the composites were investigated. The results indicate that flake size significantly influences the absorption performance. The composite with medium-sized FCI (X-2, 11-14 μm) at a loading mass fraction of 40% achieves the best overall performance, exhibiting a minimum reflection loss of -48.75 dB and an effective absorption bandwidth of 7.47 GHz (10.26-17.73 GHz) at a matching thickness of 1.7 mm. The enhancement in the absorption performance of the FCI/paraffin composites is primarily attributed to the synergistic regulation of the electromagnetic loss mechanisms and impedance matching states by the FCI flake size and its loading content.

Key words： flake carbonyl iron powder microwave absorption material low-frequency absorption performance synergistic design impedance matching broadband microwave absorption

Received: 08 May 2026 Published: 12 November 2026

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	Articles by authors
	WANG Xu
	XING Xuyang
	LI Xiang
	YANG Shuren
	LIU Xin
	GUAN Linyue
	DENG Fusen
	QIAO Mingtao

Cite this article:

WANG Xu,XING Xuyang,LI Xiang, et al. Effects of loading content and size on electromagnetic wave absorption performance of flake carbonyl iron[J]. Materials Science and Engineering of Powder Metallurgy, 2026, 31(5): 544-556.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2026055 OR http://pmbjb.csu.edu.cn/EN/Y2026/V31/I5/544

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