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Feasibility of as-prepared reticulated porous barium titanate without additional radar-absorbing material coating in potential military applications

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Abstract

For decades, porous ceramics have received much scientific and industrial interests because they possess better thermal and chemical stabilities than their counterparts, including porous polymers and porous metals. Among the numerous kinds of porous ceramics, reticulated porous ceramics have recently been prepared for various application fields. However, as far as the authors’ knowledge, the radar-absorbing properties of reticulated porous ceramics remain largely unknown, until now. Therefore, the feasibility of reticulated porous ceramics prepared using barium titanate, which has an inherently high dielectric constant, as a potential platform that could be used without additional radar-absorbing material coating has been discussed. From the results obtained in this study, it was discussed whether reticulated porous barium titanate could be fabricated with an acceptable mechanical strength and radar-absorbing properties. Quantitatively, the measured reflection loss (RL) of the 2.08-mm-thick reticulated porous barium titanate, approached − 16 dB (97.49% absorption of the radar wave) at 9.2 GHz. Meanwhile, the calculated RL of the as-prepared 2.50-mm-thick reticulated porous barium titanate approached − 21 dB (99.21% absorption of the radar wave) at 9.2 GHz.

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Funding

This study was supported financially by the Fundamental Research Program of the Korean Institute of Materials Science (KIMS), Grant No. PNK6780, and by the Technology Innovation Program (20003782) of the Ministry of Trade, Industry and Energy.

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Authors and Affiliations

  1. Powder and Ceramics Division, Korea Institute of Materials Science, 797 Changwondaero, Seongsan-gu, Changwon, 51508, Gyeongsangnam-do, Republic of Korea

    Jang-Hoon Ha, Sujin Lee, Byeongjin Park, Jongman Lee & In-Hyuck Song

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  1. Jang-Hoon Ha
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Correspondence to Jang-Hoon Ha.

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Ha, JH., Lee, S., Park, B. et al. Feasibility of as-prepared reticulated porous barium titanate without additional radar-absorbing material coating in potential military applications. J Aust Ceram Soc 56, 1481–1491 (2020). https://doi.org/10.1007/s41779-020-00498-6

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