About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
An Innovative Graphene-Metal Composite Conductor for Ultrahigh Temperatures |
| Author(s) |
Wonmo Kang, Won June Choi, Chunghwan Kim |
| On-Site Speaker (Planned) |
Wonmo Kang |
| Abstract Scope |
High-performance electrical conductors operating at higher temperatures are increasingly relevant for aerospace, electric vehicles, and military applications. This study develops an innovative Ni/Ag/G/Cu composite wire designed for electrical conductors in harsh environments. The materials of the wire and their sequencing have been specifically selected after considering the functionality of each layer in NiAgGCu. Copper is used as a core due to its electrical conductivity, and axially continuous graphene (G) acts as an electrical/thermal conductive material and an effective diffusion barrier to protect the Cu core. Silver is inert against both carbon and nickel and, therefore, chemically separates them at high temperatures. Finally, the outer nickel shell protects internal structures due to its excellent anti-oxidation. NiAgGCu achieves thermal stability, even at 850℃, which is unprecedented performance compared to conventional metal-based composite conductors. The results present possible strategies to address current technical bottlenecks for high-performance electrical conductors in harsh environments. |