Quantification of Yttria in Stabilized Zirconia by Raman Spectroscopy |
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| Authors: | Yannick Hemberger Nadja Wichtner Christoph Berthold Klaus G Nickel |
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| Affiliation: | Department of Geosciences, Applied Mineralogy, University of Tuebingen, Tuebingen, Germany |
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| Abstract: | The relationship between Y2O3 content in tetragonal and cubic ZrO2 phases and the shift of the Raman band at ～645/cm was investigated. With increasing Y2O3 content, the 645/cm Raman band position decreases to lower Raman shift values. A fit of  x = Y2O3 content in wt% and y = Raman band position in per cm, was found to be valid for low Y2O3‐stabilized t‐ZrO2, t′′‐ZrO2 transition, and fully stabilized c‐ZrO2. Modeling the change in lattice parameters due to the incorporation of Y2O3 in ZrO2 as obtained from Rietveld‐refined XRD data confirms that the peculiar sigmoidal form of the band shift with Y2O3 content is mainly due to a variation of the amount of oxygen vacancies. The resultant method is highly attractive in fields of Y2O3 determination in ZrO2 materials where a fast, spatially resolved, and nondestructive analysis is required. |
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