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Phase equilibria in the HfO₂-ZrO₂-CeO₂ system at 1250°C

Author： Andrievskaya E. Gerasimyuk G. Kornienko O. Samelyuk A. Lopato L.

Publisher： MAIK Nauka/Interperiodica

ISSN： 0020-1685

Source： Inorganic Materials, Vol.42, Iss.12, 2006-12, pp. : 1352-1359

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

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Abstract

The 1250°C phase equilibria in the HfO₂-ZrO₂-CeO₂ system have been studied for the first time over the entire composition triangle, and the 1250°C section of the HfO₂-ZrO₂-CeO₂ phase diagram has been constructed using x-ray diffraction, optical microscopy, and scanning electron microscopy. No new phases have been identified in the system. We have located three regions of solid solutions based on the constituent oxides (M-HfO₂, T-ZrO₂, and F-CeO₂), three two-phase (T + F, T + M, and F + M) regions, and one three-phase (T + F + M) region.

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