| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
Graphene-coated Wires for Structural Application: Improved Mechanical Properties, Outstanding Strength Efficiency, and Enhancement Mechanism |
| Author(s) |
Won June Choi, Maxwel Kulak, Uschuas Das, Chunghwan Kim, Wonmo Kang |
| On-Site Speaker (Planned) |
Won June Choi |
| Abstract Scope |
In this study, we investigated the mechanical behavior and underlying enhancement mechanism of graphene-coated metal wires under 100 μm diameter. The graphene was synthesized on the metal wires via chemical vapor deposition (CVD) and was investigated via Raman and TEM for quantitative/qualitative analysis. The mechanical properties of wires were measured via the customized tensile tester, including a 3D-printed sample holder, universal tester, and optical microscope. Graphene-coated Ni wires showed enhanced mechanical properties, e.g., up to around 40% and 70% higher yield and ultimate tensile strength, respectively, compared to annealed wires. In addition, we obtained higher strength efficiencies, R, compared to previous graphene/metal composite research. We analyzed the fractured surface of wires to verify the effect of graphene via SEM. Several enhancement mechanisms were considered to validate the graphene’s effect on mechanical properties, and the contribution of each mechanism in our wires was quantitively predicted and compared with experimental results. |