A new white beam X-ray microdiffraction setup on the BM32 beamline at the European Synchrotron Radiation Facility

O Ulrich, X Biquard, P Bleuet, O Geaymond… - Review of scientific …, 2011 - pubs.aip.org
A white beam microdiffraction setup has been developed on the bending magnet source
BM32 at the European Synchrotron Radiation Facility. The instrument allows routine …

New insights into the structural transition from UO 2+ x to U 3 O 7 by quantitative Raman spectroscopy

JM Elorrieta, A Milena-Pérez, JF Vigier… - Physical Chemistry …, 2022 - pubs.rsc.org
The study of uranium oxides at different conditions is of paramount importance in the nuclear
field, especially regarding characterization of the spent nuclear fuel behavior in dry storage …

Microstructural degradation of UN and UN-UO2 composites in hydrothermal oxidation conditions

JK Watkins, DP Butt, BJ Jaques - Journal of Nuclear Materials, 2019 - Elsevier
The degradation behavior in high pressure water of UN and UN+(5–10 w%) UO 2 monolithic
pellets fabricated from UN synthesized via a hydride-dehydride-nitride thermal process was …

Low-Temperature Oxidation of Fine UO2 Powders: A Process of Nanosized Domain Development

G Leinders, J Pakarinen, R Delville… - Inorganic …, 2016 - ACS Publications
The nanostructure and phase evolution in low-temperature oxidized (40–250° C), fine UO2
powders (< 200 nm) have been investigated by X-ray diffraction (XRD) and high-resolution …

Oxidation of Micro- and Nanograined UO2 Pellets by In Situ Synchrotron X-ray Diffraction

E De Bona, K Popa, O Walter, M Cologna… - Inorganic …, 2022 - ACS Publications
When in contact with oxidizing media, UO2 pellets used as nuclear fuel may transform into
U4O9, U3O7, and U3O8. The latter starts forming by stress-induced phase transformation …

Oxidation of UC: an in situ high temperature environmental scanning electron microscopy study

C Gasparrini, R Podor, D Horlait, MJD Rushton… - Journal of Nuclear …, 2017 - Elsevier
In situ HT-ESEM oxidation of sintered UC fragments revealed the morphological changes
occurring during the transformation between UC to UO 2 and UO 2 to U 3 O 8 at 723–848 K …

Shot-peening of pre-oxidized plates of zirconium: Influence of residual stress on oxidation

L Raceanu, V Optasanu, T Montesin, G Montay… - Oxidation of metals, 2013 - Springer
The present study deals with oxidation behavior under residual stress of shot-peened plates
of “commercially pure” zirconium exposed for 30 min at 650° C. The influence of the shot …

Influence of superficial oxidation on the pyrophoric behaviour of uranium hydride and uranium powders in air

C Ablitzer, F Le Guyadec, J Raynal, X Génin… - Journal of nuclear …, 2013 - Elsevier
Pyrophoric behaviours in air of uranium hydride and uranium powders have been studied
on samples of small mass–several tens of milligrams–in a thermogravimetric device and on …

Evidence of Trivalent Am Substitution into U3O8

M Caisso, P Roussel, C Den Auwer, S Picart… - Inorganic …, 2016 - ACS Publications
U3O8 is considered to be the most stable phase for uranium oxide. Its structural properties
must be accurately understood to foresee and manage aspects such as its leaching …

Surface and electrochemical controls on UO2 dissolution under anoxic conditions

BT Tan, AJ Popel, RJ Wilbraham, J Day… - Journal of Nuclear …, 2019 - Elsevier
The escape of radionuclides from underground spent nuclear fuel disposal facilities will
likely result from anoxic dissolution of spent nuclear fuel by intruding groundwater. Anoxic …