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In-situ growth of MAX phase coatings on carbonised wood and their terahertz shielding properties


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.


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This study was supported financially by the National Natural Science Foundation of China (Grant Nos. 51902320, 61831012, and U2004212). Qing Huang thanks International Partnership Program of Chinese Academy of Sciences (Grant No. 174433KYSB20190019), the Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang (Grant No. 2019R01003). Mian Li acknowledges the support from the fund of the State Key Laboratory of Solidification Processing in NPU (Grant No. SKLSP201917).

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Correspondence to Jianfeng Zhu, Qiye Wen, Xu Xiao or Qing Huang.

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Huang, J., Wan, H., Li, M. et al. In-situ growth of MAX phase coatings on carbonised wood and their terahertz shielding properties. J Adv Ceram 10, 1291–1298 (2021).

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  • MAX phases
  • biomimics
  • electromagnetic interference (EMI)
  • terahertz shielding