About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Ceramic Materials and Processing
|
| Presentation Title |
Synthesis, Characterization, and Analysis of (GdDyHoEr)2Zr2O7 Material Library via Combinatorial Magnetron Reactive Sputtering |
| Author(s) |
Dalton A. Pearl, Jade Holliman, Joshua Safin, Kamyar Barakati, Sergei Kalinin, Katharine Page, Philip D Rack, Patrick E Hopkins, Andrew Jones |
| On-Site Speaker (Planned) |
Dalton A. Pearl |
| Abstract Scope |
Next-generation propulsion systems work at temperature and pressure regimes above the current thermal barrier coating system’s operation limits. High-throughput synthesis and characterization of novel ceramic materials with improved thermomechanical properties and phase stability are necessary. Combinatorial thin film material libraries of (GdDyHoEr)2Zr2O7 were created via combinatorial magnetron reactive sputtering in a 25/5sccm Ar/O2 atmosphere with rare-earth/zirconium alloy targets on 100mm substrates. Structural, chemical, and thermal property characterization mapping of the (GdDyHoEr)2Zr2O7 composition space is performed via transmission XRD at NSLS-II and autonomous AFM, EDS, and steady-state thermoreflectance (SSTR). XRD and EDS results demonstrate the single-phase formation of the defect fluorite structure with a rare-earth-to-transition-metal ratio of 1:1. Thermal conductivity mapping shows a correlation with configurational entropy and size disorder of the system, as well as larger size disorder and grain size. This work establishes the workflow and methodology for rapid material discovery and analysis via combinatorial thin film material libraries. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, High-Temperature Materials, Thin Films and Interfaces |