Sub-micrometre grained UO 2 pellets consolidated from sol gel beads using spark plasma sintering (SPS)
Source abstract
Abstract
UO2 beads from the sol supported precipitation method were calcined at a low temperature in order to obtain porous micro-beads, composed of nanometric particles. The sintering behaviour of the beads in spark plasma sintering was investigated. The powder had a good sinterability and the final grain size of the pellets could be tailored by varying the processing conditions, in order to resemble the microstructure of the traditionally fabricated UO2 pellets (i.e. grains of several µm size), or to achieve sub-micrometre size as observed in the high burnup structure. Dense UO2 pellets with a grain size as small as 300 nm were obtained by sintering at 835 °C without dwell time, whereas 3 µm grained pellets were obtained at 1000 °C and a 5 min dwell time.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Nuclear Materials and Properties · Radioactive element chemistry and processing · Nuclear materials and radiation effects
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
Show source-provided references
1. Thermal and mechanical properties of uranium nitride prepared by SPS technique10.1007/s10853-008-2731-x ↗
2. Densification of uranium dioxide fuel pellets prepared by spark plasma sintering (SPS)10.1016/j.jnucmat.2012.12.010 ↗
3. Influence of processing parameters on thermal conductivity of uranium dioxide pellets prepared by spark plasma sintering10.1016/j.jeurceramsoc.2014.01.018 ↗
4. Enhanced thermal conductivity of uranium dioxide–silicon carbide composite fuel pellets prepared by Spark Plasma Sintering (SPS)10.1016/j.jnucmat.2012.09.015 ↗
5. Implementation of a spark plasma sintering facility in a hermetic glovebox for compaction of toxic, radiotoxic, and air sensitive materials10.1063/1.4913529 ↗
6. G. Subhash, R.H. Baney, J.S. Tulenko, E. Mckenna, L. Ge, S. Yeo, High density UO2 and high thermal conductivity UO2 composites by spark plasma sintering (SPS), WO 2014028731 A1.
7. Influence of carbon nanotube dispersion in UO2–carbon nanotube ceramic matrix composites utilizing spark plasma sintering10.13182/NT14-7 ↗
8. Master sintering curves for UO2 and UO2–SiC composite processed by spark plasma sintering10.1016/j.jnucmat.2014.08.023 ↗
9. Manufacture of fully dense uranium nitride pellets using hydride derived powders with spark plasma sintering10.1016/j.jnucmat.2014.06.012 ↗
10. Simulated UO2 fuel containing CsI by spark plasma sintering10.1016/j.jnucmat.2015.07.030 ↗
11. Electric current activated/assisted sintering (ECAS): a review of patents 1906–200810.1088/1468-6996/10/5/053001 ↗
12. Influence of externally imposed and internally generated electrical fields on grain growth, diffusional creep, sintering and related phenomena in ceramics10.1111/j.1551-2916.2011.04652.x ↗
13. Electric current activation of sintering: a review of the pulsed electric current sintering process10.1111/j.1551-2916.2010.04210.x ↗
14. Field-assisted sintering technology/spark plasma sintering: mechanisms, materials, and technology developments10.1002/adem.201300409 ↗
15. Bulk-nanocrystalline oxide nuclear fuels – an innovative material option for increasing fission gas retention, plasticity and radiation-tolerance10.1016/j.jnucmat.2011.11.056 ↗
16. Efficient annealing of radiation damage near grain boundaries via interstitial emission10.1126/science.1183723 ↗
17. Radiation tolerance of nanocrystalline ceramics: insights from yttria stabilized zirconia10.1038/srep07746 ↗
18. Synthesis of colloidal uranium−dioxide nanocrystals10.1021/ja067940p ↗
19. Synthesis and characterization of nanometric powders of UO2+x, (Th,U)O2+x and (La,U)O2+x10.1016/j.jssc.2009.06.039 ↗
20. Nanoscale UO2 and novel complex U(IV)-sulphate phase formation from electrolytically reduced uranyl sulphate solutions10.1524/ract.2010.1694 ↗
21. Non-aqueous synthesis of isotropic and anisotropic actinide oxide nanocrystals10.1002/chem.201200513 ↗
22. Synthesis and low temperature in situ sintering of uranium oxide nanoparticles10.1021/cm2020669 ↗
23. Low temperature decomposition of U(IV) and Th(IV) oxalates to nanograined oxide powders10.1016/j.jnucmat.2015.02.027 ↗
24. J.H. Yang, K.W. Kang, Y.W. Rhee, K.D. Joo, J.H. Kim, K.S. Kim, K.W. Song, Fabrication of nano-structured UO2 fuel pellets, T. Korean Nucl. Soc. Autumn Meeting, 2007, pp. 261–262.
25. Transmutation of actinides10.1111/j.1151-2916.2002.tb00152.x ↗
26. Synthesis of dense yttrium-stabilised hafnia pellets for nuclear applications by spark plasma sintering10.1016/j.jnucmat.2014.08.029 ↗
27. Sol–gel microsphere pelletization: a powder-free advanced process for fabrication of ceramic nuclear fuel pellets10.1007/BF02757652 ↗
28. Fabrication routes for yttria-stabilized zirconia suitable for the production of minor actinide transmutation targets10.1111/j.1551-2916.2005.00175.x ↗
29. Investigation of the oxygen activity of oxide fuels and fuel-fission product systems by solid electrolyte techniques. Part I: qualification and limitations of the method10.1016/0022-3115(83)90110-1 ↗
30. Fast low-temperature consolidation of bulk nanometric ceramic materials10.1016/j.scriptamat.2005.11.015 ↗
31. Highly transparent pure alumina fabricated by high-pressure spark plasma sintering10.1111/j.1551-2916.2010.03811.x ↗