Abstract
ZrO2:10 mol% Sc2O3 was mixed to MnO2 to evaluate its effect on cubic phase stabilization, oxide ion conductivity and aging at 600oC. Pressed ceramic pellets of zirconia stabilized with 10 mol% scandia with addition of 1.0, 2.0 and 2.5 mol% MnO2 were sintered at 1500 °C/2 h. In situ high temperature X-ray diffraction data were collected to follow the rhombohedral-to-cubic transition. Polished and thermally etched surfaces of the sintered pellets were observed in scanning electron microscope. Impedance spectroscopy measurements were carried out. The single cubic structure is achieved for the specimen with 2 mol% MnO2 nominal addition. The electrical conductivity of this specimen was monitored at 600 oC for 100 days. The ionic conductivity value remained constant, suggesting its use as solid electrolyte in SOFCs operating at that temperature.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
