About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Mechanical Behavior at the Nanoscale VII
|
Presentation Title |
Exploring Deformation Mechanisms in Optical Ceramic Nanomultilayers |
Author(s) |
Danielle Elizabeth White, Andrea Hodge |
On-Site Speaker (Planned) |
Danielle Elizabeth White |
Abstract Scope |
Nanomultilayers, which are layered thin films of alternating materials, can be used as multifunctional coatings by tailoring features such as layer thickness for more than one property. For example, the mechanical performance of optically tuned ceramic nanomultilayers is shown to be influenced by the mechanical behavior of the layer constituents, volume fractions, aperiodicity, and interfaces, all of which affect the optical performance as well. This work examines mechanical deformation of various optimized configurations for AlN/Al2O3 nanomultilayered coatings with an average transmittance of 90% to 96% in the UV-Vis-NIR spectral range. The coatings are investigated under various deformation modes, including scratch testing, to assess interfacial and overall strength. Extensive microstructural analysis is performed pre- and post-mortem via SEM and TEM and correlated to both mechanical behavior and optical transmittance. Overall, the role of interfaces is linked to strengthening mechanisms in optical ceramic nanomultilayers for joint tunability of opto-mechanical performance. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Nanotechnology, Other |