Journal of Materials Science

, Volume 10, Issue 9, pp 1527-1535

First online:

Phase relationships in the zirconia-yttria system

  • H. G. ScottAffiliated withCSIRO Division of Tribophysics, University of Melbourne

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Metastable and equilibrium phase relationships in the system ZrO2:YO1.5 have been studied by X-ray diffraction. The conditions for the retention of a zirconia-rich tetragonal phase at ambient temperature are established. The existence of a miscibility gap, closed below the solidus temperature, in the yttria-rich solid solution region is proposed. Some evidence for partially ordered phases is presented.