The low-temperature phase stability of 97 mol.% ZrO₂–3 mol.% Y₂O₃, 95 mol.% ZrO₂–3 mol.% Y₂O₃–2 mol.% CeO₂, 92.5 mol.% ZrO₂–2.5 mol.% Y₂O₃–5 mol.% CeO₂, 90 mol.% ZrO₂–2 mol.% Y₂O₃–8 mol.% CeO₂, and 88 mol.% ZrO₂–12 mol.% CeO₂ materials in the ZrO₂–Y₂O₃–CeO₂ system was studied. The phase stability was determined through accelerated aging in hydrothermal conditions for 7 h and 14 h. The evaluation criterion was the amount of the M-ZrO₂ phase that formed in the samples when aged in hydrothermal conditions. The properties of the materials were analyzed by X-ray diffraction and electron microscopy. The T-ZrO₂ → M-ZrO₂ phase transformation occurred to varying degrees in all samples except for the 88 mol.% ZrO₂–12 mol.% CeO₂ sample after the first and second aging cycles. The smallest amount of M-ZrO₂ formed in the 90 mol.% ZrO₂–2 mol.% Y₂O₃–8 mol.% CeO₂ sample. After both aging cycles, the fracture patterns for the 90 mol.% ZrO₂–2 mol.% Y₂O₃–8 mol.% CeO₂ and 88 mol.% ZrO₂–12 mol.% CeO₂ samples did not change significantly. With the complex stabilization of zirconia by yttria and ceria, the T-ZrO₂ → M-ZrO₂ phase transformation was controlled in the aging process by the number of oxygen vacancies resulting from the presence of yttria and by the stresses induced by the presence of ceria in the solid solutions. The number of oxygen vacancies decreased as ceria content in the ZrO₂-based solid solutions increased, slowing down the rate of water diffusion and enhancing the low-temperature phase stability in the ZrO₂–Y₂O₃–CeO₂ materials. The effectiveness of using the 90 mol.% ZrO₂–2 mol.% Y₂O₃–8 mol.% CeO₂ and 88 mol.% ZrO₂–12 mol.% CeO₂ composites for the microstructural design of medical materials with increased resistance to low-temperature degradation in humid environments was shown.

_{97 mol.% ZrO 2} –3 mol.% Y ₂ O ₃ , 95 mol.% ZrO ₂ –3 mol.% Y ₂ O ₃ –2 mol.% CeO ₂ , 92.5 mol.%的低温相稳定性ZrO ₂ –2.5 mol.% Y ₂ O ₃ –5 mol.% CeO ₂、90 mol.% ZrO ₂ –2 mol.% Y ₂ O ₃ –8 mol.% CeO ₂和 88 mol.% ZrO ₂ – ZrO ₂ –Y ₂ O ₃ –CeO ₂中含有12 mol.% CeO _2材料系统进行了研究。通过在水热条件下加速老化7小时和14小时来测定相稳定性。评价标准是在水热条件下老化时样品中形成的M-ZrO _{2相的量。}通过X射线衍射和电子显微镜分析了材料的性能。在第一次和第二次老化循环后，除了 88 mol.% ZrO ₂ –12 mol.% CeO ₂样品外，所有样品都发生了不同程度的T- ZrO ₂ → M-ZrO _2相变。90 mol.% ZrO ₂ –2 mol.% Y ₂ O ₃ –8 mol.% CeO中形成的 M-ZrO ₂量最少_{2 个}样品。_{两个时效循环后，90 mol.% ZrO 2} –2 mol.% Y ₂ O ₃ –8 mol.% CeO ₂和 88 mol.% ZrO ₂ –12 mol.% CeO ₂样品的断裂模式没有变化显著地。通过氧化钇和氧化铈对氧化锆的复合稳定作用，在老化过程中，T-ZrO ₂ → M-ZrO ₂相变受到氧化钇的存在引起的氧空位数量和氧化钇的存在引起的应力的控制。固溶体中的二氧化铈。_{随着ZrO 2}中二氧化铈含量的增加，氧空位数量减少_{基固溶体增加，减慢了水扩散速率，增强了ZrO 2} -Y ₂ O ₃ -CeO ₂材料的低温相稳定性。_{使用 90 mol.% ZrO 2} –2 mol.% Y ₂ O ₃ –8 mol.% CeO ₂和 88 mol.% ZrO ₂ –12 mol.% CeO ₂复合材料进行医用材料微观结构设计的有效性显示出在潮湿环境中对低温降解的抵抗力增强。