About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
Combustion synthesis of SiC/graphene nanocomposites with strong microwave absorption |
| Author(s) |
Bohan Wang |
| On-Site Speaker (Planned) |
Bohan Wang |
| Abstract Scope |
Economical and green preparation of SiC composites with tunable microwave-absorbing properties is of great importance. In this study, SiC/graphene nanocomposites were synthesized via combustion synthesis technology by using CO2, a greenhouse gas, as the carbon source. The phase composition, microstructure and microwave-absorbing performance of the SiC/graphene nanocomposites were characterized. Dielectric properties and impedance matching can be precisely controlled simultaneously by changing the composition of the SiC/graphene nanocomposites. The characteristic microstructure of the SiC/graphene nanocomposites with networks of multilayer graphene sheets has a significant contribution to the improved microwave attenuation capability. The SiC/graphene nanocomposite sample with optimized composition and microstructure showed excellent microwave-absorbing performance, with a reflection loss (RL) of −63.94 dB at 6.15 GHz, and effective absorption bandwidth (EAB) of 4.05 GHz for RL < −10 dB.
This study underscores the significant impacts of graphene content on the microstructure and microwave-absorbing properties of the SiC/graphene nanocomposites. |