Effect of Al2O3 on the Phase Stability of Y-Ce-TZP/Al2O3 Composites at Low Temperature
The mechanical properties and the phase stability in yttria and ceria stabilized zirconia containing 0-20wt% A12O3 during aging in air (300°C) and in water vapor (150°C, 180°C, 200°C and 250°C) are investigated in this paper. It is found that water can greatly accelerate the degradation of Y-Ce-TZP. The addition of Al2O3 to Y-Ce-TZP prevents the low temperature degradation in air. Also Al2O3 particles can restrain the phase transformation of tetragonal to monoclinic in Y-Ce-TZP under water vapor condition when the temperature is below 200°C.
Wei Pan and Jianghong Gong
X. P. Lin, J. T. Ma, B. Q. Zhang, Q. Lin, "Effect of Al2O3 on the Phase Stability of Y-Ce-TZP/Al2O3 Composites at Low Temperature", Key Engineering Materials, Vols. 336-338, pp. 1190-1193, 2007