Stabilization of the fluorite phase in the ZrO2–Y2O3 system
Металлы. 2016. No. 9. P. 869-874.
Popov V. V., Yastrebtsev A. A., Смирнов И. С., Монахов И. С., Новоселова Е. Г., Tsarenko N. A., Udovskii A. L.
The calculated and experimental vertical ZrO2–Y2O3 sections of the Zr–Y–O system are compared to find the region of a stable fluorite structure of yttrium-stabilized zirconia (YSZ). X-ray diffraction (XRD) and Raman scattering are used to study the crystal and local structures of mixed oxide 0.82ZrO2 · 0.18Y2O3 (18YSZ) powders prepared by isothermal annealing of a precursor precipitated from a salt solution. The formation of a fluorite-type fcc structure (space group Fm3 ¯ m) in the powders is detected by XRD. Raman scattering study of the local structure of the cubic 18YSZ powders revealed traces of the tetragonal phase in them.