Abstract
The phase chemistry, conductivity in air and forming gas, and stability in warm humid environments of zirconia-ceria-yttria ceramics are described. The compositions studied lie between 12 mol % ceria/88 mol % zirconia and 3 mol % yttria/97 mol % zirconia and fall within the tetragonal phase field of this ternary system. At temperatures below 700° C, reducing atmospheres were found to affect only the conductivity of the end-member ceria-zirconia ceramic, having no effect on the ternary compositions investigated. Compositions containing more than 10 mol % ceria were found to be more stable to stabilizer loss in water vapour at 132° C than those containing less than 10 mol % ceria.
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Leach, C., Khan, N. Stability of zirconia-ceria-yttria ceramics in hostile environments. J Mater Sci 26, 2026–2030 (1991). https://doi.org/10.1007/BF00549162
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DOI: https://doi.org/10.1007/BF00549162