Evidence of a Biphasic Domain in the UO2-Nd2O3 Diagram at Room Temperature: a Proof for a Miscibility Gap in UO2-Nd2O3 Phase Diagram ?

Author:

Desgranges Lionel1,Marcet Mathieu2,Pontillon Yves3,Porcher Françoise2,Lamontagne Jerome1,Matheron Pierre1,Iltis Xavière1,Baldinozzi Gianguido3

Affiliation:

1. CEA

2. CEA/DSM IRAMIS

3. CNRS Ecole Centrale Paris SPMS MFE

Abstract

Several samples of (U,Nd)O2with different Nd content (ranging from 2 to 50 in Nd2O3mass. %) were prepared. For composition ranging from 6 to 20 in Nd2O3mass %, two crystalline phases are unambiguously evidenced by X-ray and neutron diffraction, by optical microscopy, and by SEM-EDX and EPMA. The influence of the preparation route on the distribution of the domains made by these two phases is evidenced and discussed.

Publisher

Trans Tech Publications, Ltd.

Subject

Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics

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