Title

Temperature And Preassure Assisted Cubic To Rhombohedral Phase Transition In Sc0.1Ce0.01Zro2 By Micro-Raman

Abstract

It was recently shown that, the high temperature cubic Sc 0.1Ce0.01ZrO2 is metastable at room temperature and could be easily transformed to the thermodynamically stable rhombohedral phase upon annealing at 350°C-400°C after a certain period of time. Such transition, though not drastically important for operation of Intermediate Temperature Solid Oxide Fuel Cell, still might degrade the performance of Sc0.1Ce0.01ZrO2 electrolyte upon thermal cycling. Therefore, the properties of the cubic and rhombohedral Sc 0.1Ce0.01ZrO2 phases have to be studied. Here, we report the vibration response of cubic and rhombohedral Sc 0.1Ce0.01ZrO2 studied both at room and high-temperatures. Stress and temperature-assisted phase transition from cubic to rhombohedral phase was detected during in-situ Raman spectroscopy experiments. The conditions which promote either the formation of rhombohedral phase or retention of cubic phase upon temperature or stress applications have been determined.

Publication Date

5-13-2010

Publication Title

Ceramic Engineering and Science Proceedings

Volume

30

Issue

4

Number of Pages

155-166

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

77951992306 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77951992306

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