Abstract Hydrothermal ageing of yttria-stabilized tetragonal zirconia ceramics can have a strong influence on the lifetime of zirconia devices. Ageing kinetics are often described by the Mehl–Avrami–Johnson equation, most often used as a phenomenological description. This work seeks to relate the parameters of MAJ equations (V max , n, b 0 and Q) to microstructural characteristics of the zirconia material: grain sizes, Y 2 O 3 partitioning, monoclinic, tetragonal and cubic phases ratio. Samples with identical nominal composition of 3Y-TZP were prepared with grain sizes ranging from 190 nm to 773 nm. From their microstructural parameters, a relationship between microstructural parameters and sintering cycles was first proposed, followed by a relationship between ageing parameters and microstructural parameters. These results provide a convenient framework to better develop the sintering cycle of zirconia biomaterial in order to maximize their resistance to hydrothermal ageing.

中文翻译：

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从工艺参数预测3Y-TZP生物陶瓷的水热老化

摘要 氧化钇稳定的四方氧化锆陶瓷的水热老化对氧化锆器件的寿命有很大影响。老化动力学通常由 Mehl-Avrami-Johnson 方程描述，最常用作现象学描述。这项工作试图将 MAJ 方程的参数（V max 、n、b 0 和 Q）与氧化锆材料的微观结构特征联系起来：晶粒尺寸、Y 2 O 3 分配、单斜、四方和立方相比。制备具有相同标称成分 3Y-TZP 的样品，其晶粒尺寸范围为 190 nm 至 773 nm。从它们的微观结构参数，首先提出了微观结构参数和烧结周期之间的关系，其次是时效参数和微观结构参数之间的关系。