Microstructure and radiation tolerance of molybdenum-rich glass composite nuclear waste forms
Microstructure and radiation tolerance of molybdenum-rich glass composite nuclear waste forms
复制标题
富钼玻璃复合核废料形态的微观结构和耐辐射性能
DOI:
10.1016/j.jnucmat.2023.154635
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发表时间:
2023
影响因子:
3.1
通讯作者:
Zagyva T
中科院分区:
文献类型:
--
作者:
Zagyva T
Non-active molybdenum-rich Ca/Zn glass composite materials (GCM) were prepared on the Vitrification Test Rig (VTR) in the UK. The GCM samples were subjected to Ni and Au ion irradiations to simulate the effects of alpha recoil damage and to determine how the crystallinity characteristics might affect the overall radiation tolerance of high-level wastes (HLW) generated during post-operational clean-out (POCO) operations at the Sellafield nuclear site. The typical crystal phases identified in the GCM were: powellite, ruthenium dioxide, zincochromite, zircon and cerianite. Gadolinium (a proxy for radioactive elements) accumulated mainly in powellite, zircon and cerianite crystals. Scanning electron microscopy (SEM), electron backscatter diffraction (EBSD) and grazing incidence X-ray diffraction (GIXRD) analyses showed that cerianite is a highly radiation-tolerant phase, whereas powellite and zircon became amorphous and swelled considerably after the Ni and Au ion irradiations. This research shows the first evidence of powellite amorphisation under heavy-ion irradiation and suggests that powellite is susceptible to amorphisation by alpha recoils in HLW materials, in contrast to previous findings. The evolution of cooling-related and irradiation-induced microcracks is also described. In HLW glass composite materials, the formation of microcracks is expected in the middle of the canister, where relatively large powellite and zircon crystals appear.
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影响因子:
3.7
作者:
K. Trachenko;M. Dove;E. Salje
通讯作者:
K. Trachenko;M. Dove;E. Salje
影响因子:
2.7
作者:
A. Zaitsev;A. Chakhmouradian;O. Siidra;J. Spratt;C. Williams;C. Stanley;S. V. Petrov;S. Britvin;E. Polyakova
通讯作者:
E. Polyakova
DOI:
10.46427/gold2022.10301
发表时间:
2022
期刊:
Goldschmidt2022 abstracts
影响因子:
--
作者:
Shane Houchin;F. Tissot;M. Ibáñez;F. Pavia;M. Newville;A. Lanzirotti
通讯作者:
A. Lanzirotti
影响因子:
3.5
作者:
M. Ficheux;E. Burov;G. Aquilanti;N. Trcera;V. Montouillout;L. Cormier
通讯作者:
L. Cormier
DOI:
10.1016/0191-815x(88)90071-x
发表时间:
1988
期刊:
Nuclear and Chemical Waste Management
影响因子:
--
作者:
D. W. Faletti;L. Ethridge
通讯作者:
L. Ethridge