Enhanced electromagnetic wave absorption properties of SiCN(Ni)/BN ceramics by <i>in situ</i> generated Ni and Ni<sub>3</sub>Si
Yanchun Tong, Chunmiao Liu, Chang Liu, Haibin Sun, Yurun Feng, Qiangqiang Hu, Hongying Zhang, Yujun Zhao, Xue Guo, Shigang Wu
Abstract
) of SiCN-7 reached -53.47 dB at 4.2 mm and the effective absorption bandwidth (EAB) was 2.32 GHz at 3.48 mm. Through the analysis of electrical conductivity, it was found that the proportion of polarization loss in dielectric loss was more than 99%. It is worth noting that the radar cross section (RCS) value of SiCN-7 absorber was lower than that of the perfect electrical conductor (PEC) plate in the range of -90-90°, and showed a larger coverage angle, indicating that it possessed a good practical application prospect in the field of electromagnetic wave absorption.
Topics & Concepts
Reflection lossMaterials scienceElectromagnetic radiationCeramicOptoelectronicsPolarization (electrochemistry)NickelBandwidth (computing)In situAbsorption (acoustics)OpticsComposite materialChemistryMetallurgyComposite numberTelecommunicationsPhysicsPhysical chemistryOrganic chemistryComputer scienceElectromagnetic wave absorption materialsAdvanced Antenna and Metasurface TechnologiesAntenna Design and Analysis