Enhanced electromagnetic interference shielding properties of silicon carbide composites with aligned graphene nanoplatelets. Issue 16 (December 2018)

• Record Type: Journal Article
• Authors: Chen, Chen; Tan, Yongqiang; Han, Xiaochun; Luo, Heng; Zeng, Sifan; Peng, Shuming; Zhang, Haibin
• Is Part Of: Journal of the European Ceramic Society. Volume 38:Issue 16(2018)
• Page Start: 5615
• Page End: 5619
• Publication Date: 2018-12
• Subjects: Graphene nanoplatelets -- Texture distribution -- Capacitors -- Multiple reflections -- Electrical conductivity; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2018.07.050
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: Graphene nanoplatelets (GNPs) were successfully incorporated into silicon carbide (SiC) ceramic matrix in a self-aligned pattern and the obtained materials displayed extremely high value of shielding effectiveness (SE) over 40 dB by adding only 3 wt.% GNPs, which was the highest SE value in all SiC-based composites reported in literature up to now. It was found that the texture distribution of GNPs was crucial to achieve the high electromagnetic interference shielding performance of SiC/GNPs composites, which can contribute to the significant improvement of both absorption and reflection. The improved absorption originated from the formation of network of mini capacitors comprised of self-aligned GNPs and multiple reflections. The improvement of reflection was attributed to the high electrical conductivity of the composite due to the introduction of GNPs. These results indicate that SiC/GNPs composites can be used as high-performance ceramic-based EMI shielding materials.