Abstract
Tetragonal to rhombohedral phase transformation was studied by X-ray diffraction technique on the ground surfaces of tetragonal zirconia polycrystals (Y-TZP) and partially stabilized zirconia (Y-PSZ) with 2.0 to 5.0 mol% Y2 O3 contents prepared by hot isostatic pressing. The rhombohedral phase increased with increase of Y2 O3 content from 2.0 to 5.0 mol%, and also with the increase of HIPing temperature from 1400 to 1600°C. The stability of the phase was also studied with regard to the surface finish and annealing. The subsequent heat treatment of the samples was found to promote the reverse rhombohedral to tetragonal transformation.
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Kitano, J., Mori, Y., Ishitani, A. et al. A Study of Rhombohedral Phase in Y2 O3 -Partially Stabilized Zirconia. MRS Online Proceedings Library 78, 17–24 (1986). https://doi.org/10.1557/PROC-78-17
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DOI: https://doi.org/10.1557/PROC-78-17