Crystallization study of rare earth and molybdenum containing nuclear waste glass ceramics
Crystallization study of rare earth and molybdenum containing nuclear waste glass ceramics
复制标题
含稀土、钼核废料玻璃陶瓷的结晶研究
DOI:
10.1111/jace.16406
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发表时间:
2019
影响因子:
3.9
通讯作者:
McCloy J
中科院分区:
文献类型:
--
作者:
McCloy J
A glass‐ceramic waste form is being developed for immobilization of waste streams of alkali (A), alkaline‐earth (AE), rare earth (RE), and transition metals generated by transuranic extraction for reprocessing of used nuclear fuel. Benefits over an alkali borosilicate waste form are realized by the partitioning of the fission product fraction insoluble in glass into a suite of chemically durable crystalline phases through controlled cooling, including (AE,A,RE)MoO4(powellite) and (RE,A,AE)10Si6O26(oxyapatite). In this study, a simplified 8‐oxide system (SiO2‐Nd2O3‐CaO‐Na2O‐B2O3‐Al2O3‐MoO3‐ZrO2) was melted, then soaked at various temperatures from 1450 to 1150°C, and subsequently quenched, in order to obtain snapshots into the phase distribution at these temperatures. For these samples, small angle X‐ray and neutron scattering, quantitative X‐ray diffraction, electron microscopy,23Na nuclear magnetic resonance, Nd3+visible absorption, and temperature‐dependent viscosity were characterized. In this composition, soak temperatures of 1250°C were necessary to nucleate calcium molybdate (~10‐20 nm in diameter). Further cooling produced oxyapatite and total crystallization increased with lower soak temperatures. Both Na and Nd entered the crystalline phases with lower‐temperature soak conditions. Slow cooling or long isothermal treatments at ~975°C produced significantly higher crystal fractions.
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DOI:
--
发表时间:
1969
期刊:
影响因子:
--
作者:
P. B. Jamieson;S. Abrahams;J. Bernstein
通讯作者:
J. Bernstein
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
P. Tumurugoti;S. Sundaram;S. Misture;J. Marra;J. Amoroso
通讯作者:
J. Amoroso
影响因子:
0.8
作者:
J. McCloy;J. Marcial;B. Riley;J. Neuefeind;J. Crum;D. Patil
通讯作者:
D. Patil
影响因子:
3.1
作者:
Crum, Jarrod V.;Neeway, James J.;Tang, Ming
通讯作者:
Tang, Ming
影响因子:
3.1
作者:
Amoroso, Jake;Marra, James C.;Brinkman, Kyle S.
通讯作者:
Brinkman, Kyle S.