Achieving ultra-broadband electromagnetic wave absorption in high-entropy transition metal carbides (HE TMCs)

doi:10.1007/s40145-021-0554-2

IMR OpenIR

	Achieving ultra-broadband electromagnetic wave absorption in high-entropy transition metal carbides (HE TMCs)
	Zhang,Weiming 1; Xiang,Huimin 1; Dai,Fu-Zhi 1; Zhao,Biao 2; Wu,Shijiang 3; Zhou,Yanchun 1
通讯作者	Zhou,Yanchun(yczhou@alum.imr.ac.cn)
	2022-03-17
发表期刊	Journal of Advanced Ceramics
ISSN	2226-4108
卷号	11 期号:4
摘要	AbstractElectronic devices pervade everyday life, which has triggered severe electromagnetic (EM) wave pollution. To face this challenge, developing EM wave absorbers with ultra-broadband absorption capacity is critically required. Currently, nano-composite construction has been widely utilized to realize impedance match and broadband absorption. However, complex experimental procedures, limited thermal stability, and interior oxidation resistance are still unneglectable issues. Therefore, it is appealing to realize ultra-broadband EM wave absorption in single-phase materials with good stability. Aiming at this target, two high-entropy transition metal carbides (HE TMCs) including (Zr,Hf,Nb,Ta)C (HE TMC-2) and (Cr,Zr,Hf,Nb,Ta)C (HE TMC-3) are designed and synthesized, of which the microwave absorption performance is investigated in comparison with previously reported (Ti,Zr,Hf,Nb,Ta)C (HE TMC-1). Due to the synergistic effects of dielectric and magnetic losses, HE TMC-2 and HE TMC-3 exhibit better impedance match and wider effective absorption bandwidth (EAB). In specific, the exclusion of Ti element in HE TMC-2 endows it optimal minimum reflection loss (RLmin) and EAB of ?41.7 dB (2.11 mm, 10.52 GHz) and 3.5 GHz (at 3.0 mm), respectively. Remarkably, the incorporation of Cr element in HE TMC-3 significantly improves the impedance match, thus realizing EAB of 10.5, 9.2, and 13.9 GHz at 2, 3, and 4 mm, respectively. The significance of this study lays on realizing ultra-broadband capacity in HE TMC-3 (Cr, Zr, Hf, Nb, Ta), demonstrating the effectiveness of high-entropy component design in tailoring the impedance match.
关键词	transition metal carbide (TMC) high-entropy ceramics electromagnetic (EM) wave absorption dielectric and magnetic loss coupling ultra-broadband absorption
DOI	10.1007/s40145-021-0554-2
语种	英语
WOS记录号	BMC:10.1007/s40145-021-0554-2
出版者	Tsinghua University Press
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/173419
专题	中国科学院金属研究所
通讯作者	Zhou,Yanchun
作者单位	1.Aerospace Research Institute of Materials & Processing Technology; Science and Technology on Advanced Functional Composite Laboratory 2.Zhengzhou University of Aeronautics; Henan Key Laboratory of Aeronautical Materials and Application Technology, School of Material Science and Engineering 3.Zibo Firststar New Material Incorporated Co., Ltd.
推荐引用方式 GB/T 7714	Zhang,Weiming,Xiang,Huimin,Dai,Fu-Zhi,et al. Achieving ultra-broadband electromagnetic wave absorption in high-entropy transition metal carbides (HE TMCs)[J]. Journal of Advanced Ceramics,2022,11(4).
APA	Zhang,Weiming,Xiang,Huimin,Dai,Fu-Zhi,Zhao,Biao,Wu,Shijiang,&Zhou,Yanchun.(2022).Achieving ultra-broadband electromagnetic wave absorption in high-entropy transition metal carbides (HE TMCs).Journal of Advanced Ceramics,11(4).
MLA	Zhang,Weiming,et al."Achieving ultra-broadband electromagnetic wave absorption in high-entropy transition metal carbides (HE TMCs)".Journal of Advanced Ceramics 11.4(2022).