Journal
ADVANCED FUNCTIONAL MATERIALS (CMC 2017)
Volume -, Issue -, Pages 83-92Publisher
SPRINGER-VERLAG SINGAPORE PTE LTD
DOI: 10.1007/978-981-13-0110-0_11
Keywords
Polymer-derived SiCN ceramics; Rare earth oxides; Microwave absorbing properties
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Funding
- National Nature Science Foundation of China [51572154]
- Natural Science Foundation of Shandong Province [2015ZRE27348]
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This study investigated the compositions, dielectric properties, magnetic properties and microwave absorbing properties of polymer-derived SiCN ceramics doped with Dy2O3, Eu2O3, Sm2O3, Y2O3 and Gd2O3 respectively. The complex permittivity and complex permeability were measured at the frequency range of 2-18 GHz. The reflectivity of polymer-derived SiCN ceramics doped with Eu2O3 reaches to the lowest value of -35 dB at 16.4 GHz. While the electromagnetic damping coefficient reaches the maximum value of 653 at 16.1 GHz, which clearly demonstrates that by doping Eu2O3 the wave absorbing performance of polymer-derived SiCN can be enhanced more pointedly than the other samples.
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