Affiliation of Author(s):[1]Univ Sci & Technol, Sch Shaanxi, Xian 710021, Peoples R China;[2]Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Engn Lab Adv Energy Mat, Ningbo 315201, Peoples R China;[3]Qianwan Inst CNiTECH, Zhongchuangyi Rd, Ningbo 315336, Peoples R China;[4]Univ Elect Sci & Technol China, State Key Lab Elect Thin Film & Integrated Device, Sch Elect Sci & Engn, Chengdu 610054, Peoples R China;[5]Northwestern Polytech Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
Journal:JOURNAL OF ADVANCED CERAMICS
Key Words:MAX phases; biomimics; electromagnetic interference (EMI); terahertz shielding
Abstract:Electromagnetic interference (EMI) shielding materials have received considerable attention in recent years. The EMI shielding effectiveness (SE) of materials depends on not only their composition but also their microstructures. Among various microstructure prototypes, porous structures provide the advantages of low density and high terahertz wave absorption. In this study, by using carbonised wood (CW) as a template, 1-mm-thick MAX@CW composites (Ti2AlC@CW, V2AlC@CW, and Cr2AlC@CW) with a porous structure were fabricated through the molten salt method. The MAX@CW composites led to the formation of a conductive network and multilayer interface, which resulted in improved EMI SE. The average EMI SE values of the three MAX@CW composites were > 45 dB in the frequency of 0.6-1.6 THz. Among the composites, V2AlC@CW exhibited the highest average EMI SE of 55 dB.
Document Type:Article
Volume:10
Issue:6
Page Number:1291-1298
ISSN No.:2226-4108
Translation or Not:no