| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties & Applications
|
| Presentation Title |
Anisotropic Thermal Conductivity and Associated Heat Transport Mechanism in Roll-to-Roll Graphene Reinforced Copper Matrix Composites |
| Author(s) |
Kunming Yang, Y.C. Ma, Z.Y. Zhang, J. Zhu, Yue Liu, T.X. Fan |
| On-Site Speaker (Planned) |
Kunming Yang |
| Abstract Scope |
Owing to the high strength of Cu and high in-plane thermal conductivity (Kr) of graphene (Gr), Gr/Cu composites are increasingly demanded as the advanced thermal management materials. By combining roll-to-roll chemical vapor deposition and subsequent hot isostatic pressing techniques, highly-paralleled-Gr reinforced Cu composites were fabricated. Our results showed that the composites reach the highest Kr, and the lowest through-plane thermal conductivity (Kz) when Gr layer-number (N) is ~5-6. When N increases from 1 to 6, the continuously increased Kr and decreased Kz are majority influenced by intrinsic properties of Gr, also validated by multiscale simulations and time-domain thermoreflectance analysis. When N is ~10, both Kr and Kz exhibit opposite trend, attributing to the reduced Gr coverage and existing of amorphous carbon. Also, the interface residual strain may reduce both Kr and Kz. This study suggests high-quality thick Gr may be promising for future development of high Kr in Gr/Cu composites. |
| Proceedings Inclusion? |
Planned: |