| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation and Transitions at Grain Boundaries VII
|
| Presentation Title |
Adsorption and Equilibrium Metal-ceramic Orientation Relationships |
| Author(s) |
Hadar Nahor, Ting Mao, Wayne D. Kaplan |
| On-Site Speaker (Planned) |
Wayne D. Kaplan |
| Abstract Scope |
While the details of metastable orientation relationships (ORs) of thin films on substrates depend on the kinetics of the specific deposition process, equilibrium (minimal energy) ORs define the driving force for microstructural evolution during annealing of thin films. This study examines equilibrium ORs of metals on sapphire and yttrium stabilized zirconia (YSZ). Equilibrium conditions were reached by dewetting the thin films in the solid-state (annealing until the film ruptures and forms single crystal particles), and the influence of dopants and impurities on the equilibrium crystal shape of the metal, the low-energy OR of the metal with the substrate, and the interface energy, was assessed. This presentation will show that while specific low-index low-energy ORs often exist, adsorption to the same metal-ceramic interfaces can result in a more isotropic distribution of ORs at equilibrium in addition to a decreased interface energy. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |