Stabilization of the fluorite phase in the ZrO2–Y2O3 system


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Abstract

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 \(Fm\overline 3 m\)) 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.

About the authors

N. A. Tsarenko

JSC Scientific Research Institute of Chemical Technology

Email: victorvpopov@mail.ru
Russian Federation, Kashirskoye sh. 33, Moscow, 115409

A. L. Udovskii

National Research Nuclear University MEPhI (Moscow Engineering Physics Institute); Baikov Institute of Metallurgy and Materials Science

Email: victorvpopov@mail.ru
Russian Federation, Kashirskoye sh. 31, Moscow, 115409; Leninskii pr. 49, Moscow, 119991

V. V. Popov

National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)

Author for correspondence.
Email: victorvpopov@mail.ru
Russian Federation, Kashirskoye sh. 31, Moscow, 115409

A. A. Yastrebtsev

National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)

Email: victorvpopov@mail.ru
Russian Federation, Kashirskoye sh. 31, Moscow, 115409

I. S. Smirnov

National Research University Higher School of Economics

Email: victorvpopov@mail.ru
Russian Federation, ul. Myasnitskaya 20, Moscow, 101000

I. S. Monakhov

National Research University Higher School of Economics

Email: victorvpopov@mail.ru
Russian Federation, ul. Myasnitskaya 20, Moscow, 101000

E. G. Novoselova

National Research University Higher School of Economics

Email: victorvpopov@mail.ru
Russian Federation, ul. Myasnitskaya 20, Moscow, 101000


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