• Tianchun Zou

      Articles written in Bulletin of Materials Science

    • Microwave absorbing properties of activated carbon fibre polymer composites

      Tianchun Zou Naiqin Zhao Chunsheng Shi Jiajun Li

      More Details Abstract Fulltext PDF

      Microwave absorption of composites containing activated carbon fibres (ACFs) was investigated. The results show that the absorptivity greatly depends on increasing ACF content in the absorbing layer, first increasing and then decreasing. When the content is 0.76 wt.%, the bandwidth below −10dB is 12.2 GHz. Comparing the absorption characteristics of the ACF composite with one containing unactivated fibres, it is found that carbon fibre activation increases the absorption of the composite.

    • Electromagnetic and microwave absorbing properties of hollow carbon nanospheres

      Tianchun Zou Haipeng Li Naiqin Zhao Chunsheng Shi

      More Details Abstract Fulltext PDF

      A mass of hollow carbon nanospheres (HCNSs) was fabricated by chemical vapour deposition of methane over Ni/Al2O3 catalyst at 600 °C. The products were characterized with high-resolution transmission electron microscope images, and the results showed that the external diameter of the HCNSs was 5–90nm and the thickness of wall was about 10 nm. Microwave absorption of HCNSs/paraffin composites was mainly attributed to dielectric loss. The microwave-absorbing peaks of composites containing HCNSs shifts to low frequencies, and the bandwidth below −10 dB and minimum RL decrease with increasing thickness of HCNSs/paraffin composites.

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