Uranium carbide oxidation from 873 K to 1173 K
Source abstract
Abstract
Abstract Oxidation of UC was studied from 873 to 1173 K in air and in 10 Pa oxygen using a High Temperature Environmental SEM (HT-ESEM). Conversion to U3O8 improved when using 873 K as the oxide product was a fine powder. At higher temperatures (973 K to 1173 K) oxidation slowed due to a densification process with formation of coarse fragments. The oxide fragmentation at 973 K and 1073 K and oxide pulverisation at 873 K were observed in situ in a HT-ESEM. Cracking induced fragmentation and pulverisation was linked to stresses generated from the volumetric transformation from UC to U3O8.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nuclear Materials and Properties · Radioactive element chemistry and processing · Nuclear reactor physics and engineering
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References (56)
Show source-provided references
1. Nuclear Decommissioning Authority · 2013
2. Nuclear Decommissioning Authority · 2012
3. Nuclear Decommissioning Authority · 2014 · 1
4. The ignition of uranium mononitride and uranium monocarbide in oxygen10.1016/0022-3115(67)90185-7 ↗
5. Kinetic study of the reaction between uranium monocarbide and water vapor10.1246/bcsj.40.1878 ↗
6. Kinetic studies of the hydrolysis of uranium monocarbide in the temperature range 30°C–90°C10.1016/0022-1902(70)80249-4 ↗
7. Chemical state of complex uranium oxides10.1103/PhysRevLett.111.253002 ↗
8. Thermodynamic and thermophysical properties of the actinide oxides, in: Sect. 2.02 Compr10.1016/B978-0-08-056033-5.00009-4 ↗
9. Reaction of uranium monocarbide powder in oxidizing atmospheres10.1016/0040-6031(73)85026-9 ↗
10. Matcheret · 1970
11. Isothermal oxidation of uranium monocarbide powder under controlled oxygen partial pressures10.1080/18811248.1976.9734020 ↗
12. The Oxidation of UC and UN Powder in Air10.1080/18811248.1968.9732521 ↗
13. Oxidation of uranium monocarbide10.1016/0022-5088(62)90027-9 ↗
14. Effect of humidity on the surface oxidation of UC single crystals at room temperature10.1063/1.1658277 ↗
15. Experimental kinetic study of oxidation of uranium monocarbide powders under controlled oxygen partial pressures below 230°C10.1016/j.jnucmat.2012.08.002 ↗
16. Thermodynamic and experimental study of UC powders ignition10.1016/j.jnucmat.2009.06.009 ↗
17. Siekhaus · 2015
18. Oxidation of UC: an in situ high temperature environmental scanning electron microscopy study10.1016/j.jnucmat.2017.07.016 ↗
19. On the origin of the sigmoid shape in the UO2 oxidation weight gain curves10.1016/j.jeurceramsoc.2009.04.010 ↗
20. Coppersthwaite · 2005
21. Mathematical model of the oxidation of a uranium carbide fuel pellet including an adherent product layer10.1016/j.apm.2017.01.041 ↗
22. Mathematical modelling of the pre-oxidation of a uranium carbide fuel pellet10.1016/j.compchemeng.2015.05.001 ↗
23. Uranium oxides formed in air and water in the temperature range 200-375 °C
24. Matzke · 1986
25. Oxidation of uranium dioxide in air at 350–1000°C10.1016/0022-3115(60)90051-9 ↗
26. Manara · 2012
27. Experiments on pyrochemical reprocessing of uranium carbide fuel
28. The structures of the carbides, nitrides and oxides of uranium10.1021/ja01181a029 ↗
29. Carbon positions in uranium carbides10.1107/S0365110X59000445 ↗
30. Fritsche · 1988
31. The phase transition in alpha-U3O8 at 210°C10.1107/S002188987000571X ↗
32. Triuranium heptaoxides: Heat capacities and thermodynamic properties of α- and β-U3O7 from 5 to 350°K10.1016/0022-3697(62)90055-0 ↗
33. Structure de U4O910.1107/S0365110X61002448 ↗
34. Oxidation of UO2 pellets in air10.1080/18811248.1968.9732532 ↗
35. Formation of columnar U3O8 grains on the oxidation of UO2 pellets in air at 900°C10.1016/0022-3115(94)90262-3 ↗
36. Morphological and functional effects of graphene on the synthesis of uranium carbide for isotopes production targets10.1038/s41598-018-26572-5 ↗
37. On the oxidation mechanism of pure tungsten in the temperature range 600-800°C10.1016/j.corsci.2011.12.027 ↗
38. Grain morphology and crystal structure of pre-transition oxides formed on Zircaloy-410.1016/j.corsci.2013.05.007 ↗
39. Columnar to equiaxed transition in solidification processing10.1016/S1468-6996(01)00047-X ↗
40. Recycling process for sinter-active U3O8 powders10.1080/18811248.2010.9711976 ↗
41. A review of the oxidation of uranium dioxide at temperatures below 400°C10.1016/S0022-3115(97)00343-7 ↗
42. Cuboctahedral oxygen clusters in U3O710.1016/S0022-3115(03)00318-0 ↗
43. Sintering of mixed UO2 and U3O8 powder compacts10.1016/S0022-3115(99)00212-3 ↗
44. Neutron diffraction measurements of the residual stresses in Al2O3-ZrO2(CeO2) ceramic composites10.1111/j.1151-2916.1994.tb09758.x ↗
45. Ahn · 1996
46. Implication of volume changes in uranium oxides: a density functional study10.1016/j.solidstatesciences.2013.06.013 ↗
47. Experimental characterization and modeling of UO2 grain boundary cracking at high temperatures and high strain rates10.1016/j.jnucmat.2015.02.018 ↗
48. Relevance of structure, fragmentation and reactivity of coal to combustion and oxy-combustion10.1016/j.fuel.2016.11.034 ↗
49. Oxidation of carbon: what we know and what we still need to know10.1016/j.egypro.2017.07.155 ↗
50. Effect of oxidation on creep of silicon-nitride-based ceramics
51. Grain growth in sintered uranium dioxide: II, columnar grain growth10.1111/j.1151-2916.1962.tb11027.x ↗
52. Transport phenomena in nuclear fuels under severe temperature gradients10.1016/0022-3115(79)90147-8 ↗
53. Lang · 1960
54. Matpro — Version 11 A Handbook of Materials Properties for Use in the Analysis of Light Water Reactor Fuel Rod Behavior, Idaho Natl
55. Implication of volume changes in uranium oxides: a density functional study10.1016/j.solidstatesciences.2013.06.013 ↗
56. Theoretical investigation of structural and mechanical properties of uranium oxide, uranium 2010