Published April 15, 2019 | Version v1
Journal article Metadata-only

Study on the phase separation behavior of (U,Nd)3O8 powder by high temperature oxidation

Creators

  • 1. Chinese Academy of Sciences, Institute of Modern Physics (China)

Description

Several samples of (U1−xNdx)3O8 with different Nd content were prepared by different process. After high temperature oxidation, the final oxidized products were found to be a mixture of small particles Nd-rich (U1−yNdy)O2+v phases and large particles Nd-poor (U1−zNdz)3O8−w phases by XRD and SEM analysis. This study indicated that (U1−xNdx)3O8 powder formed a solid solution firstly at 1100 °C or high. The recrystallization of this solid solution happened and the RE-rich fluorite phase formed concurrently when the temperature began to decrease. The present work will provide more information to understand the oxidation behavior of rare-earth doped U3O8 phase at high temperature.

Additional details

Identifiers

DOI
10.1007/s10967-019-06439-3;

Publishing Information

Journal Title
Journal of Radioanalytical and Nuclear Chemistry
Journal Volume
320
Journal Issue
1
Journal Page Range
p. 235-243
ISSN
0236-5731
CODEN
JRNCDM

INIS

Country of Publication
Hungary
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
54121734
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Descriptors DEI
DOPED MATERIALS; FLUORITE; OXIDATION; POWDERS; RARE EARTHS; RECRYSTALLIZATION; SCANNING ELECTRON MICROSCOPY; SOLID SOLUTIONS; SPENT FUELS; URANIUM OXIDES U3O8; X-RAY DIFFRACTION
Descriptors DEC
ACTINIDE COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; COHERENT SCATTERING; DIFFRACTION; DISPERSIONS; ELECTRON MICROSCOPY; ELEMENTS; ENERGY SOURCES; FUELS; HALIDE MINERALS; HOMOGENEOUS MIXTURES; MATERIALS; METALS; MICROSCOPY; MINERALS; MIXTURES; NUCLEAR FUELS; OXIDES; OXYGEN COMPOUNDS; REACTOR MATERIALS; SCATTERING; SOLUTIONS; URANIUM COMPOUNDS; URANIUM OXIDES

Optional Information

Copyright
Copyright (c) 2019 Akad#Latin Small Letter E With Acute#miai Kiad#Latin Small Letter O With Acute#, Budapest, Hungary