High dose 30 MeV 58Ni5+ ion irradiation causes microstructure evolution in nuclear graphite at 400 °C
Source abstract
Abstract
A 30 MeV 58Ni 5+ ion beam was used to irradiate fine-grained graphite grade IG110 and ultrafine-grained graphite grade G1 at 400 °C to study their microstructure evolution under irradiation. Taking advantage of the depth dependence of the damage rate and cumulative damage of ion irradiation, the microstructure change exploration of graphite with multiple damage levels within a single fluence specimen was achieved by characterizing the sample cross-section with HR-TEM and micro-Raman. The Raman 2D maps of the cross-sections of the graphite samples irradiated with various fluences and displacement damages up to ∼18 displacements per atom were analyzed. Evidenced by the saturation of the intensity ratio of graphite Raman D and G band (I D/I G), the irradiation damage and annealing equilibrium was observed. Moreover, I D/I G in combined with the full width at half maximum of the G band (FWHM (G)), shows an inverse evolution compared with the graphitization process, which is also supported by the HR-TEM observation. Demonstrated by the increasing rate of I D/I G with FWHM (G) and the saturation I D/I G, the microstructure changes of fine-grained graphite IG110 and ultrafine-grained graphite G1 was distinguished.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Graphite, nuclear technology, radiation studies · Fusion materials and technologies · Ion-surface interactions and analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (44)
Show source-provided references
1. Nuclear graphite—the first years10.1016/0022-3115(81)90519-5 ↗
2. Chapter 1 - structure and bonding in carbon materials
3. Chapter 1 - graphite in the nuclear industry,
4. Chapter 5 - the effect of irradiation on the thermal and structural properties of graphite
5. Behaviors of fine (IG-110) and ultra-fine (HPG-510) grain graphite irradiated by 7 MeV Xe26+ ions10.1007/s41365-017-0292-x ↗
6. Radiation defects in graphite10.1080/14786430701210023 ↗
7. Ion irradiation to simulate neutron irradiation in model graphites: consequences for nuclear graphite10.1016/j.nimb.2017.05.056 ↗
8. Characterizing various types of defects in nuclear graphite using Raman scattering: heat treatment, ion irradiation and polishing10.1016/j.carbon.2015.07.095 ↗
9. 120 GeV neutrino physics graphite target damage assessment using electron microscopy and high-energy x-ray diffraction10.1103/PhysRevAccelBeams.22.041001 ↗
10. Proton irradiation-induced creep of ultra-fine grain graphite10.1016/j.carbon.2014.06.016 ↗
11. Ion Implantation in diamond, graphite and related materials10.1063/1.2808905 ↗
12. Opportunities and limitations for ion beams in radiation effects studies: bridging critical gaps between charged particle and neutron irradiations10.1016/j.scriptamat.2017.06.041 ↗
13. Transformation of graphite into nanodiamond following extreme electronic excitations10.1103/PhysRevB.76.155403 ↗
14. Production of nanodiamonds by high-energy ion irradiation of graphite at room temperature10.1016/S0168-583X(00)00603-0 ↗
15. Possible diamond-like nanoscale structures induced by slow highly-charged ions on graphite (HOPG)10.1016/j.nimb.2009.05.060 ↗
16. Observation of an HCI-induced nano-dot on an HOPG surface with STM and AFM10.1016/j.nimb.2005.03.223 ↗
17. Evidence for re-crystallization process in the irradiated graphite with heavy ions obtained by Raman spectroscopy10.1016/j.carbon.2016.01.076 ↗
18. Tracks of swift heavy ions in graphite studied by scanning tunneling microscopy10.1103/PhysRevB.64.184115 ↗
19. Ionization-induced annealing of pre-existing defects in silicon carbide10.1038/ncomms9049 ↗
20. Fundamental Phenomena and Applications of Swift Heavy Ion Irradiations
21. Structural investigation of xenon-ion-beam-irradiated glassy carbon10.1103/PhysRevB.50.5905 ↗
22. Monitoring by Raman spectroscopy of the damage induced in the wake of energetic ions10.1002/jrs.4482 ↗
23. Recovery effects due to the interaction between nuclear and electronic energy losses in SiC irradiated with a dual-ion beam10.1063/1.4914305 ↗
24. Interpretation of Raman spectra of disordered and amorphous carbon10.1103/PhysRevB.61.14095 ↗
25. Raman spectrum of graphite10.1063/1.1674108 ↗
26. Quantifying ion-induced defects and Raman relaxation length in graphene10.1016/j.carbon.2009.12.057 ↗
27. A Raman study to obtain crystallite size of carbon materials: a better alternative to the Tuinstra–Koenig law10.1016/j.carbon.2014.09.006 ↗
28. Development of irradiation capabilities to address the challenges of the nuclear industry10.1016/j.nimb.2014.11.028 ↗
29. SRIM–The stopping and range of ions in matter10.1016/j.nimb.2010.02.091 ↗
30. Threshold displacement energy and damage function in graphite from molecular dynamics10.1016/j.carbon.2015.11.040 ↗
31. Near-surface structure and residual stress in as-machined synthetic graphite10.1016/j.matdes.2018.08.041 ↗
32. Structural features of pyrocarbon atomistic models constructed from transmission electron microscopy images10.1016/j.carbon.2012.05.015 ↗
33. Irradiation damage in nuclear graphite at the atomic scale10.1016/j.carbon.2018.03.024 ↗
34. Atomic scale mechanisms for the amorphisation of irradiated graphite10.1016/j.carbon.2015.05.003 ↗
35. T. Shibata, K. Sawa, M. Eto, E. Kunimoto, S. Shiozawa, T. Oku, T. Maruyama, Draft of standard for graphite core components in high temperature gas-cooled reactor, Technical Report, JAEA-Research-2009-042, 2010, Japan Atomic Energy Agency, Tokai, Ibaraki (Japan), URL: http://jolissrch-inter.tokai-sc.jaea.go.jp/pdfdata/JAEA-Research-2009-042.pdf
36. Microstructural characterization and pore structure analysis of nuclear graphite10.1016/j.jnucmat.2011.05.053 ↗
37. Raman spectra of graphite edge planes10.1016/0008-6223(88)90157-1 ↗
38. Fullerene-like defects in high-temperature neutron-irradiated nuclear graphite10.1016/j.carbon.2020.05.028 ↗
39. Neutron irradiation damage of nuclear graphite studied by high-resolution transmission electron microscopy and Raman spectroscopy10.1016/j.jnucmat.2015.10.027 ↗
40. Neutron irradiation induced microstructural changes in NBG-18 and IG-110 nuclear graphites10.1016/j.carbon.2015.01.036 ↗
41. Buckle, ruck and tuck: a proposed new model for the response of graphite to neutron irradiation10.1016/j.jnucmat.2011.04.015 ↗
42. Determination of crystallite size in polished graphitized carbon by Raman spectroscopy10.1103/PhysRevB.86.134205 ↗
43. General equation for the determination of the crystallite size La of nanographite by Raman spectroscopy10.1063/1.2196057 ↗
44. Experimental evidence for ‘buckle, ruck and tuck’ in neutron irradiated graphite10.1016/j.carbon.2019.12.028 ↗