期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 734, 期 -, 页码 220-228出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.11.044
关键词
EMI shielding effectiveness; High entropy alloy; Mechanical alloying; Powder size effect
资金
- NSF-Consortium for innovation in manufacturing and materials (CIMM) program [OIA-1541079]
- Office of Integrative Activities [1541079] Funding Source: National Science Foundation
The electromagnetic interference (EMI) shielding effectiveness of epoxy based composite samples, containing two different sizes of high entropy AlCoCrFeNi alloy powders, was examined under K alpha band [26-40 GHz] in this paper. High-energy ball milling processes were used to fabricate AlCoCrFeNi alloy powders of two different sizes, HEA(L) for larger sizes and HEA(S) for finer powders, respectively. Comparing with the 8.44 dB value of the HEA(L) containing sample, the HEA(S) sample has a maximum total shielding effectiveness (SET) of 20 dB due to the smaller powder sizes and flake-like morphology. Shielding mechanism was studied by resolving the total EMI SET into absorption and reflection portions. Absorption was found to be the major shielding mechanism and reflection had a secondary shielding effect for both HEA(L) and HEA(S) cases. (C) 2017 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据