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Investigations on ceria–hafnia system for phase analysis, and HT-XRD studies on a few cubic compositions

The phase relations in the system CeO 2–HfO 2 have been studied under slow cooled conditions. About 10 mol% of HfO 2 was found to be soluble in the CeO 2 lattice under these conditions. All the other compositions were found to be biphasic mixtures of F-type cubic and monoclinic phases. The lattice t...

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Published in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2006-10, Vol.433 (1), p.203-207
Main Authors:	Chavan, S.V., Tyagi, A.K.
Format:	Article
Language:	English
Subjects:	Ceria Cross-disciplinary physics: materials science rheology Exact sciences and technology Hafnia Materials science Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Phase diagrams of other materials Phase relation Physics Thermal expansion
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description	The phase relations in the system CeO 2–HfO 2 have been studied under slow cooled conditions. About 10 mol% of HfO 2 was found to be soluble in the CeO 2 lattice under these conditions. All the other compositions were found to be biphasic mixtures of F-type cubic and monoclinic phases. The lattice thermal expansion behavior was also investigated for a few single phasic as well as biphasic compositions, by means of high temperature XRD. It was found that the compositions with a higher amount of HfO 2 in CeO 2 lattice showed higher thermal expansion behavior.
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subjects	Ceria Cross-disciplinary physics: materials science rheology Exact sciences and technology Hafnia Materials science Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Phase diagrams of other materials Phase relation Physics Thermal expansion
title	Investigations on ceria–hafnia system for phase analysis, and HT-XRD studies on a few cubic compositions
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