Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7886539 | Ceramics International | 2018 | 12 Pages |
Abstract
Carbon-containing polymer-derived SiCN ceramics (PDCs-SiCN-C) were successfully fabricated with multi-layer graphene (MLG) and multiwalled carbon nanotubes (MWCNTs) as additives at 1100â¯Â°C. The effects of MLG and MWCNTs on the microwave absorption properties of PDCs-SiCN-C ceramics were analyzed. The imaginary permittivity and loss tangent of SiCN-MLG and SiCN-MWCNTs were about 3.4, 0.67 at 11.2â¯GHz and 3.1, 0.57 at 10.6â¯GHz, respectively. The minimum reflection loss of SiCN-MLG and SiCN-MWCNTs at 3â¯mm was ââ¯54â¯dB and ââ¯48â¯dB with the effective absorption bandwidth (RL ⤠â10â¯dB, >90% absorption) about 1.5â¯GHz and 0.9â¯GHz in X-band.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yurun Feng, Xue Guo, Hongyu Gong, Yujun Zhang, Yu Liu, Xiao Lin, Junjie Mao,