Fe nanoparticles decorated in residual carbon from coal gasification fine slag as an ultra-thin wideband microwave absorber

doi:10.1016/j.compscitech.2021.108921

	Fe nanoparticles decorated in residual carbon from coal gasification fine slag as an ultra-thin wideband microwave absorber
	Gao, Shengtao 1,2,3; Chen, Longwei 1; Zhang, Yuanchun 3; Shan, Jiafang 1
刊名	COMPOSITES SCIENCE AND TECHNOLOGY
	2021-09-08
卷号	213
关键词	Magnetic materials Residual carbon Microwave absorption Fine slag
ISSN号	0266-3538
DOI	10.1016/j.compscitech.2021.108921
通讯作者	Gao, Shengtao(shtgao@aust.edu.cn) ; Chen, Longwei(lwchen@ipp.ac.cn)
英文摘要	Microwave absorbing materials are widely used in the defense and telecommunications industries, as means for enhancing battlefield penetration rate and improving the protection of precision instruments. The magnetic dielectric Fe@ residual carbon from coal gasification fine slag (Fe@RC) nanocomposites were fabricated via a chemical coprecipitation and thermal annealing method, in which involve a reduction process from the Fe3O4 to Fe metal. The structure, morphology, compositions and electromagnetic parameters of the as-prepared Fe@RC materials were characterized. The obtained nano-micro scale Fe@RC shown adjusting electromagnetic parameters and outstanding microwave absorbability. The optimized reflection loss value of-47.1 dB was attained at 5.5 GHz for Fe@RC, and the effective bandwidth is 5.3 GHz (12.4-17.7 GHz) at a matching thickness of 1.5 mm. Benefit from good impedance match, special space architecture and synergistic effect between the dielectric loss from RC component and magnetic loss from Fe component, this Fe@RC materials are expected to be a potential microwave absorber. The simulated radar cross section (RCS) results prove that the Fe@RC can efficaciously reduce the microwave scatterings of the perfect electric conductor substrate at different degrees in C-, X-, and Ku bands via adjusting the Fe@RC coating thickness. The low-cost carbon-based magnetic nanocomposites display an ultra-thin wideband microwave absorption ability and high RCS reduction performance, promoting resource utilization of the RC from coal gasification fine slag.
资助项目	National Natural Science Foundation of China[11575252] ; National Natural Science Foundation of China[11775270]
WOS关键词	ELECTROMAGNETIC-WAVE ABSORPTION ; CUBE-LIKE ZNSNO3 ; GRAPHENE OXIDE ; MESOPOROUS CARBON ; HYBRID COMPOSITES ; PERFORMANCE ; FRAMEWORK ; EFFICIENT ; ENHANCEMENT ; TEMPERATURE
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000685929700005
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/124404]
专题	中国科学院合肥物质科学研究院
通讯作者	Gao, Shengtao; Chen, Longwei
作者单位	1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Anhui Univ Sci & Technol, Huainan 232001, Peoples R China
推荐引用方式 GB/T 7714	Gao, Shengtao,Chen, Longwei,Zhang, Yuanchun,et al. Fe nanoparticles decorated in residual carbon from coal gasification fine slag as an ultra-thin wideband microwave absorber[J]. COMPOSITES SCIENCE AND TECHNOLOGY,2021,213.
APA	Gao, Shengtao,Chen, Longwei,Zhang, Yuanchun,&Shan, Jiafang.(2021).Fe nanoparticles decorated in residual carbon from coal gasification fine slag as an ultra-thin wideband microwave absorber.COMPOSITES SCIENCE AND TECHNOLOGY,213.
MLA	Gao, Shengtao,et al."Fe nanoparticles decorated in residual carbon from coal gasification fine slag as an ultra-thin wideband microwave absorber".COMPOSITES SCIENCE AND TECHNOLOGY 213(2021).