About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
|
| Presentation Title |
Hybrid microwave processing, characterization, and hot corrosion of yttria stabilized zirconia |
| Author(s) |
Morsi M. Mahmoud, Mohammed Arif, Nestor Ankah, Zuhair Gasem |
| On-Site Speaker (Planned) |
Morsi M. Mahmoud |
| Abstract Scope |
This research investigates the impact of hybrid microwave sintering (HMW) on the phase development, microstructure, thermal conductivity, and hot corrosion behaviour of yttria-stabilized zirconia (8YSZ—in wt%). Green samples were sintered at 1350°C, 1400°C, and 1450°C. HMW sintering resulted in considerable increases in phase stability, with decreased monoclinic phase content and greater tetragonal phase preservation at all sintering temperatures. At 1450°C, 8YSZ's monoclinic phase concentration decreased to 4.13%. Thermal conductivity decreased as the sintering temperature increased, with the lowest observed value of 0.0822 W/mK at 1450°C, which was attributable to a lower monoclinic phase percentage and finer grain structure. HMW-sintered samples show improved hot corrosion resistance by reducing phase transition and YVO₄ formation. HMW produces superior outcomes in terms of phase stability, microstructure, thermal performance, and corrosion resistance. HMW is an attractive, energy-efficient option for processing YSZ ceramics for high-temperature applications. |