Phase Relations in the ZrO₂FeO System

S. V. Beshta*, E. V. Krushinov*, V. I. Al’myashev**, S. A. Vitol’*,
L. P. Mezentseva**, Yu. B. Petrov***, D. B. Lopukh***, V. B. Khabenskii*,
M. Barrachin****, S. Hellmann*****, and V. V. Gusarov**

* Aleksandrov Research Technological Institute, Sosnovyi bor, Leningrad oblast, Russia

** Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences,
ul. Odoevskogo 24/2, St. Petersburg, 199155 Russia

*** St. Petersburg Electrotechnical University (LETI), St. Petersburg, Russia

**** Institut de Radioprotection et de Sûreté Nucleair (IRSN), Paris, France

***** FRAMATOME ANP, Erlangen, Germany

Received March 15, 2005

Abstract—We present the results of the investigation of the ZrO₂–FeO system under an inert atmosphere. We
have refined the position of the eutectic point, which lies at 1332 ± 5°C and 10.3 ± 0.6 mol % ZrO₂ . The iron
oxide solubility boundaries in zirconium dioxide have been determined over a wide temperature range taking
into account the polymorphism in ZrO₂ . A phase diagram for the system has been designed.

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