About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Ceramic Materials and Processing
|
| Presentation Title |
Fabrication of Optically Transparent MgAl2O4 Ceramics via Solution Combustion Synthesis and Spark Plasma Sintering |
| Author(s) |
Demet Aydogmus, Berkay Uygun, Merve Capkin, Gulen Demirtas, Ata Erkan Gursoy, Ahmet Cicek, Tunc Kaan Oskay, Filiz Cinar Sahin |
| On-Site Speaker (Planned) |
Demet Aydogmus |
| Abstract Scope |
This study presents the fabrication of optically transparent polycrystalline magnesium aluminate spinel (MgAl2O4) ceramics for potential applications in infrared optics. MgAl2O4 powders were synthesized via solution combustion synthesis (SCS) employing various organic fuels, followed by densification through spark plasma sintering (SPS). Urea was the most effective fuel, yielding phase-pure and stoichiometric spinel powders suitable for enhanced optical transmittance. Sintering parameters were systematically optimized to promote densification while minimizing grain growth and residual porosity. The most favorable optical properties were obtained at 1300 °C under an applied pressure of 80 MPa with a dwell time of 5 minutes, yielding a maximum in-line transmittance of 79.5% at 2500 nm. Microstructural analysis, density measurements, and mechanical characterization confirmed the formation of highly dense ceramics. The results demonstrate the potential of the SCS–SPS route as a cost-effective and scalable method for producing transparent spinel ceramics for advanced optical applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Characterization, Powder Materials |