| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior Related to Interface Physics IV
|
| Presentation Title |
Aperiodic Interface Spacing and Its Role in Multifunctional Ceramic Nanomultilayers |
| Author(s) |
Danielle Elizabeth White, Koushik Jagadish, Yu-Tsun Shao, Andrea M. Hodge |
| On-Site Speaker (Planned) |
Danielle Elizabeth White |
| Abstract Scope |
Optical-mechanical multifunctionality in ceramic nano multilayers (NMs) is an area of research that is relatively unexplored. Particularly, while aperiodic interface spacing has led to increased optical transmittance in ceramic NMs, the effect on deformation modes remains unclear. This work focuses on AlN/Al2O3 NMs with distinct aperiodic layer structures studied via spectrophotometry, nanoindentation, nanoscratch testing, Vickers indentation, and pillar splitting to further investigate the role of varying crystalline/amorphous (C/A) interface spacing on optical and mechanical behavior. A minimum UV-Vis-NIR transmittance of 90% was achieved across all layer structures, although plasticity, grain misorientation and crack arresting were affected by the local interface spacing, residual stress and volume fraction. Additional C/A ceramic NM systems including AlN/SiO2 will also be discussed. Overall, this study highlights deformation trends across ceramic NM systems, providing an avenue to tune the mechanical behavior of ceramic NMs with C/A interfaces while maintaining high optical transmittance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Mechanical Properties, Other |