TY - JOUR
T1 - Three-dimensional graphene/SiBCN composites for high-performance electromagnetic interference shielding
AU - Wang, Chenhao
AU - Liu, Yongsheng
AU - Zhao, Mingxi
AU - Ye, Fang
AU - Cheng, Laifei
N1 - Publisher Copyright:
© 2018 Elsevier Ltd and Techna Group S.r.l.
PY - 2018/12/15
Y1 - 2018/12/15
N2 - Siliconboron carbonitride (SiBCN) ceramics, with excellent microwave attenuation properties, are introduced into three-dimensional graphene foam (3D GF) via low-pressure chemical vapor deposition and infiltration (LPCVD/CVI) from the SiCl3CH3-NH3-BCl3-H2-Ar system. The results show that GF/SiBCN composites exhibit total shielding effectiveness and specific shielding effectiveness of about 19 dB and 29 dB·cm3/g, respectively. Owing to the porous 3D foam structure and strong attenuation ability of graphene, the composites are dominated by absorbing and shielding mechanisms. The SiBCN content did not influence the electromagnetic shielding performance of the composites because the conductive network has been formed by the highly conductive graphene. The present work provides novel insights and promising strategy for the development of lightweight, high-efficiency, high-temperature and oxidation-resistant ceramic-based electromagnetic shielding materials.
AB - Siliconboron carbonitride (SiBCN) ceramics, with excellent microwave attenuation properties, are introduced into three-dimensional graphene foam (3D GF) via low-pressure chemical vapor deposition and infiltration (LPCVD/CVI) from the SiCl3CH3-NH3-BCl3-H2-Ar system. The results show that GF/SiBCN composites exhibit total shielding effectiveness and specific shielding effectiveness of about 19 dB and 29 dB·cm3/g, respectively. Owing to the porous 3D foam structure and strong attenuation ability of graphene, the composites are dominated by absorbing and shielding mechanisms. The SiBCN content did not influence the electromagnetic shielding performance of the composites because the conductive network has been formed by the highly conductive graphene. The present work provides novel insights and promising strategy for the development of lightweight, high-efficiency, high-temperature and oxidation-resistant ceramic-based electromagnetic shielding materials.
KW - Electromagnetic interference shielding
KW - LPCVD/CVI
KW - Siliconboron carbonitride ceramic (SiBCN)
KW - Three-dimensional graphene foam
UR - https://www.scopus.com/pages/publications/85053141169
U2 - 10.1016/j.ceramint.2018.09.074
DO - 10.1016/j.ceramint.2018.09.074
M3 - 文章
AN - SCOPUS:85053141169
SN - 0272-8842
VL - 44
SP - 22830
EP - 22839
JO - Ceramics International
JF - Ceramics International
IS - 18
ER -