The Raman peaks of metastable yttria‐stabilized zirconia changed with annealing at high temperatures even before the onset of transformation to any monoclinic phase, leading to ambiguous determination of stress‐free references. In this work, the evolution of the Raman bands of metastable YSZ with annealing for different times at different high temperatures were analyzed using the tetragonality variation, which was consequent on the cation redistribution activated by thermal diffusion. The Raman bands linearly varied with the volume weighted tetragonality over the range studied (1.009‐1.015). The cation diffusion changed the bonds length and the associated Raman modes frequencies. A semiempirical equation was established to amend the available calculation for residual stresses by Raman spectroscopy, based on the variation coefficients ratio of two E_g Raman modes (465 cm⁻¹ and 640 cm⁻¹).

中文翻译：

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拉曼光谱法改善YSZ应力测量：钇偏析依赖四方性的影响

即使在转变为任何单斜晶相之前，亚稳态的氧化钇稳定的氧化锆的拉曼峰也会随着高温退火而发生变化，从而导致无应力参考的不确定性。在这项工作中，使用四方性变化分析了亚高温YSZ在不同高温下不同时间退火的拉曼能带的演化，这是由于热扩散激活了阳离子的再分布。在研究范围内（1.009-1.015），拉曼谱带随体积加权四方性线性变化。阳离子扩散改变了键长和相关的拉曼模式频率。基于两个E的变异系数比，建立了一个半经验方程来修正可用拉曼光谱对残余应力进行的计算。_g拉曼模式（465 cm ^-1和640 cm ^-1）。