Long-term helium bubble evolution in sequential He+ and H+ irradiated Li4SiO4
Source abstract
Abstract
Abstract In present study, Li4SiO4 ceramics were sequentially irradiated at room temperature using 540 keV He+ and 250 keV H+ with ion fluences of 1 × 1016 ions/cm2 and 1 × 1017 ions/cm2, corresponding to 2.14 displacements per atom (dpa) and 21.4 dpa, respectively. The change of featured structures and the long-term evolution of helium bubbles in irradiated Li4SiO4 were investigated by grazing incidence X-ray diffraction (GIXRD), Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy and transmission electron microscope (TEM). For the as-irradiated Li4SiO4, the results revealed that the lattice parameter and the amorphous fraction increased and the crystallinity decreased with the increasing irradiation dose, and the anionic disordering was the mainly induced damage. When the irradiation dose reached to 21.4 dpa, high-density bubbles with a mean diameter of 1.6 nm were observed in Li4SiO4. The following 480-day aging at room temperature rendered bubble growth due to surface diffusion, which was demonstrated by the fact of an increase in bubble size (mean diameter of 18.4 nm) and a decrease in bubble density. The formation and growth of bubbles could benefit from the presence of amorphous structures and hydrogen atoms. Furthermore, the dynamic evolution of bubbles during annealing at 723 K was monitored by in-situ TEM, and the results indicated that the migration and coalescence mechanism dominated the growth of bubbles in Li4SiO4 under relatively low temperatures.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nuclear materials and radiation effects · Fusion materials and technologies · Ion-surface interactions and analysis
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References (51)
Show source-provided references
1. Properties and performance of tritium breeding ceramics10.1016/S0022-3115(09)80005-6 ↗
2. Tbwg, Test blanket modules in ITER: an overview on proposed designs and required DEMO-relevant materials10.1016/j.jnucmat.2007.03.234 ↗
3. Current progress of Chinese HCCB TBM program10.1016/j.fusengdes.2016.02.010 ↗
4. Hot atom chemical behavior of tritium produced by Li-6 (n,alpha)H-3 in Li4SiO410.1023/A:1022523930069 ↗
5. Helium accumulation in metals during irradiation-where do we stand?10.1016/j.jnucmat.2003.09.001 ↗
6. The effects of helium in irradiated structural alloys10.1016/B978-0-08-056033-5.00006-9 ↗
7. Effect of ordered helium bubbles on deformation and fracture behavior of α-Zr10.1016/j.jmst.2019.03.015 ↗
8. D-depth profiling in as-implanted and annealed Li-based breeder blanket ceramics10.1016/j.jnucmat.2013.02.073 ↗
9. Synthesis of the biphasic mixture of Li2TiO3-Li4SiO4 and its irradiation performance10.1016/j.jeurceramsoc.2016.04.005 ↗
10. A study on irradiation-induced structural change of lithium orthosilicate by infrared spectroscopy analysis with MNDO calculation10.1016/S0022-3115(97)00168-2 ↗
11. XPS analysis on chemical states of Li4SiO4 irradiated by 3 keV D2+10.1016/j.jnucmat.2010.10.019 ↗
12. Production behavior of irradiation defects in lithium silicates and silica under ion beam irradiation10.1016/S0022-3115(00)00364-0 ↗
13. In-situ luminescence measurement of irradiation defects in lithium silicates10.1016/0168-583X(94)96238-3 ↗
14. The effect of gamma-radiation in Li4SiO4 ceramic breeder blankets10.1016/j.fusengdes.2014.11.010 ↗
15. 'chenko, Low-temperature irradiation effects in lithium orthosilicates10.1016/j.nimb.2006.04.100 ↗
16. Annihilation behavior of irradiation defects in Li4SiO4 irradiated with high thermal neutron fluence10.1016/j.jnucmat.2017.04.055 ↗
17. Basic study of influence of radiation defects on tritium release processes from lithium silicates10.1016/S0022-3115(97)00206-7 ↗
18. Formation and accumulation of radiation-induced defects and radiolysis products in modified lithium orthosilicate pebbles with additions of titanium dioxide10.1016/j.jnucmat.2015.12.027 ↗
19. Study of ceramic pebble beds in post irradiation examination of the pebble bed assemblies irradiation experiment10.1016/j.fusengdes.2012.02.052 ↗
20. Interstitial diffusion of a helium atom in bulk Li4SiO4 crystal from first-principles calculations10.1016/j.ceramint.2019.12.047 ↗
21. Density functional study of lithium vacancy in Li4SiO4: trapping of tritium and helium10.1016/j.jnucmat.2015.09.017 ↗
22. Density functional theory calculations of point defects and hydrogen isotopes in Li4SiO410.1063/1.4934935 ↗
23. Formation and behaviors of helium bubbles in Li4SiO4: a molecular dynamics simulation10.1016/j.commatsci.2019.109104 ↗
24. Fabrication and characterization of Li4SiO4 ceramic pebbles by wet method10.1016/j.jnucmat.2012.02.018 ↗
25. SRIM - the stopping and range of ions in matter10.1016/j.nimb.2010.02.091 ↗
26. Comparison of nuclear irradiation parameters of fusion breeder materials in high flux fission test reactors and a fusion power demonstration reactor10.1016/S0022-3115(00)00049-0 ↗
27. Minimizing damage during FIB sample preparation of soft materials10.1111/j.1365-2818.2011.03570.x ↗
28. Models and mechanisms of irradiation-induced amorphization inceramics10.1016/S0168-583X(99)00643-6 ↗
29. Radiation damage in lithium orthosilicate10.2320/matertrans1989.34.1150 ↗
30. Reactivity of rice husk-derived lithium silicates followed by in situ Raman spectroscopy10.1016/j.jallcom.2018.11.036 ↗
31. Irradiation effects in ceramic breeder materials10.1016/S0022-3115(98)00108-1 ↗
32. Helium bubble evolution in ion irradiated Al/B4C metal metrix composite10.1016/j.scriptamat.2015.07.011 ↗
33. Effect of H and He irradiation on cavity formation and blistering in ceramics10.1016/j.nimb.2012.03.030 ↗
34. Mechanical properties of polycrystalline lithium orthosilicate10.1111/j.1151-2916.1989.tb06296.x ↗
35. Helium bubble formation in nuclear glass by in-situ TEM ion implantation10.1016/j.jnucmat.2014.06.010 ↗
36. Effects of sequential helium and hydrogen ion irradiation on the nucleation and evolution of bubbles in tungsten10.1016/j.fusengdes.2017.01.001 ↗
37. Evolution of helium platelets and associated dislocation loops in alpha-SiC10.1103/PhysRevLett.82.2709 ↗
38. Spherical solid He nanometer bubbles in an anisotropic complex oxide10.1103/PhysRevB.82.104113 ↗
39. High-temperature annealing induced He bubble evolution in low energy He ion implanted 6H-SiC10.1088/0256-307X/34/5/052801 ↗
40. Radiation-induced helium bubbles in metals10.3390/ma12071036 ↗
41. Ab initio study of helium in Li4SiO4 crystals: electronic properties, migration, and vacancy capture mechanism10.1016/j.ceramint.2021.04.031 ↗
42. Hydrogen adsorption and diffusion on the anatase TiO2(101) surface: a first-principles investigation10.1021/jp200408v ↗
43. Breakaway bubble growth during the annealing of helium bubbles in metals10.1016/j.jnucmat.2004.04.349 ↗
44. Helium bubbles in nickel annealed at T > 0.7Tm10.1016/S0022-3115(97)00275-4 ↗
45. Synergistic effects in hydrogen-helium bubbles
46. Tritium release kinetics of lithium silicates with irradiation defects10.1016/S0920-3796(98)00102-1 ↗
47. A review on helium mobility in inorganic materials10.1016/j.jnucmat.2013.10.061 ↗
48. Calculated Size Distributions for gas bubble migration and coalescence in solids10.1063/1.1708962 ↗
49. The role of fission gas re-solution during post-irradiation heat treatment10.1016/0022-3115(62)90104-6 ↗
50. He bubble coarsening by migration and coalescence in annealed Pu-Ga alloys10.1016/j.jnucmat.2011.01.015 ↗
51. In-situ TEM observation of the evolution of dislocation loops and helium bubbles in a pre helium irradiated FeCrAl alloy during annealing10.1016/j.pnucene.2020.103502 ↗