| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances and Discoveries in Non-equilibrium Driven Nanomaterials and Thin Films
|
| Presentation Title |
Microstructure Morphology and Concentration Modulation of Bicontinuous Nanocomposite Thin-films during Physical Vapor Deposition |
| Author(s) |
James Stewart, Remi Dingreville |
| On-Site Speaker (Planned) |
Remi Dingreville |
| Abstract Scope |
Metallic nanocomposite thin-films with intertwined bicontinuous morphologies can be synthesized using physical vapor deposition of two immiscible metals. Understanding the phase ordering kinetics controlling the way the microstructure and concentration develop is crucial to obtaining reliable functionalities in these nanostructured thin films. We elucidated the complex relationship between the vapor deposition conditions and the resulting spontaneous self-assembled nanoscale morphologies by using three-dimensional phase field simulations. Our simulations account for both the deposition of the incident vapor phase of a binary alloy onto a substrate, surface interdiffusion and the subsequent spinodal decomposition in the resulting elastically inhomogeneous binary thin-film. Using the simulation results, we constructed a structure-zone diagram that establishes the various types of achievable spontaneous self-assembled microstructure morphologies and concentration modulations during physical vapor deposition. This work provides guidance on the choice of alloy chemistry and deposition conditions to obtain specific nanostructured morphologies and concentration modulations for bicontinuous nanocomposite thin-films. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |