Abstracts and Available Papers Presented at the 2000 International RERTR Meeting
U-Mo Alloy Powder Obtained By A Hydride-Dehydride Process
Balart S., Bruzzoni P., Granovsky M., Gribaudo L., Hermida J.,
Ovejero J., Rubiolo G., Vicente E.
Materiales – CAC
Comisión Nacional de
Avda. Gral. Paz 1499 – 1650 – San Martín - ARGENTINA –
The use of uranium-molybdenum
alloys as a component in high-density LEU dispersion fuels is very promising.
However, these alloys need to be transformed to powder due to the manufacturing
requirements of the fuels.
One of the possible methods to
accomplish this is the hydride-dehydride process. It is based on the ability of
phase to transform to UH3: a brittle and relatively low-density
A powder was obtained applying
this method which is described in this work.
U-Mo alloys around 7 wt % Mo were
heat treated at different temperature ranges in order to partially convert
Subsequent hydriding transforms this a-phase to UH3.
The volume change associated to the hydride formation embrittles the material
which ends up as a powdered alloy.
Results of the optical metallography, scanning electron
microscopy, X-ray diffraction during different steps of the process are shown.