Multifunctional interstitial-carbon-doped FeCoNiCu high entropy alloys with excellent electromagnetic-wave absorption performance

作     者：Jianping Yang Linwen Jiang Zhonghao Liu Zhuo Tang Anhua Wu Jianping Yang;Linwen Jiang;Zhonghao Liu;Zhuo Tang;Anhua Wu

作者机构：State Key Laboratory Base of Novel Functional Materials and Preparation ScienceKey Laboratory of Photoelectric Detection Materials and Devices of Zhejiang ProvinceNingbo UniversityNingbo 315211China Zhejiang Province Key Laboratory of Magnetic Materials and Application TechnologyCAS Key Laboratory of Magnetic Materials and DevicesNingbo Institute of Materials Technology&EngineeringChinese Academy of SciencesNingbo 315201China Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201800China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2022年第113卷第18期

页      面：61-70页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the Natural Science Foundation of China (No. 51701098) the Natural Science Foundation of Ningbo Municipality (No. 2019A610064) sponsored by K. C. Wong Magna Foundation in Ningbo University 

主　　题：Microwave absorption High entropy alloys FeCoNiCu Carbon-doping Impedance match 

摘      要：Electromagnetic-wave absorbing(EMA)materials that have efficient absorption performances,great me-chanical properties and chemical stability are rare and yet essential for communication security and ***,flaky interstitial-carbon-doped FeCoNiCu high entropy alloys(HEAs)as novel EMA ma-terials were successfully prepared by high-energy ball-milling ***-carbon doping as a modulating approach impacted the phase forming,morphology and electromagnetic properties of Fe-CoNiCu *** matching was significantly optimized via tuning interstitial carbon *** carbon-doped FeCoNiCu HEAs with appropriate carbon contents delivered superior EMA performance compared with other HEAs EMA *** reflection loss as low as-61.1 dB in the Ku band,broad effective absorption bandwidth of 5.1 GHz was achieved for FeCoNiCuC_(0.04).Moreover,the carbon-doped FeCoNiCu HEAs exhibited excellent mechanical hardness and chemical *** work not only suggests that interstitial-carbon doping is an available approach to tuning electromagnetic properties of HEAs,but also presents carbon-doped FeCoNiCu HEAs as promising EMA materials for civilian and mili-tary due to the efficient absorption,broad bandwidth,great durability and stability.