Study on the Effect of C-ion Irradiation on Hardness and Young's Modulus of Nuclear-grade Graphite

Guo Lina; Bian Wei; Peng Shunmi

doi:10.13832/j.jnpe.2023.02.0104

Volume 44 Issue 2

Apr. 2023

Turn off MathJax

Article Contents

Article Navigation > Nuclear Power Engineering > 2023 > 44(2): 104-108

Guo Lina, Bian Wei, Peng Shunmi. Study on the Effect of C-ion Irradiation on Hardness and Young's Modulus of Nuclear-grade Graphite[J]. Nuclear Power Engineering, 2023, 44(2): 104-108. doi: 10.13832/j.jnpe.2023.02.0104

Citation:

Guo Lina, Bian Wei, Peng Shunmi. Study on the Effect of C-ion Irradiation on Hardness and Young's Modulus of Nuclear-grade Graphite[J]. Nuclear Power Engineering, 2023, 44(2): 104-108. doi: 10.13832/j.jnpe.2023.02.0104

Citation:

PDF( 17492 KB)

Study on the Effect of C-ion Irradiation on Hardness and Young's Modulus of Nuclear-grade Graphite

doi: 10.13832/j.jnpe.2023.02.0104

Division of Reactor Engineering Technology Research, China Institute of Atomic Energy, Beijing, 102413, China

Received Date: 2022-06-13
Rev Recd Date: 2022-07-03
Publish Date: 2023-04-15

Abstract

Abstract

In order to ascertain the effect of ion irradiation dose and temperature on the hardness, Young's modulus and microstructure of nuclear-grade graphite, 0.02 dpa, 0.2 dpa and 2 dpa C⁴⁺ are used in this paper to irradiate nuclear-grade graphite at room temperature and 180℃, respectively. The properties and microstructure of nuclear-grade graphite under different ion irradiation conditions are studied by using nano indentor and transmission electron microscopy. The results show that the hardness and Young's modulus increase with the increase of irradiation dose at room temperature, when the irradiation dose is 2 dpa, the peak values of hardness and Young's modulus increas sharply from 0.51 GPa and 15.52 GPa without irradiation to 2.51 GPa and 37.73 GPa respectively. When the irradiation dose is 0~0.2 dpa at 180℃, the hardness and Young's modulus increase with the increase of irradiation dose, and they are higher than those at room temperature with the same irradiation dose, when the irradiation dose reaches 2 dpa, the peak values of hardness and Young's modulus decrease rapidly from 1.72 GPa and 31.53 GPa of 0.2 dpa to 1.32 GPa and 25.91 GPa. The increase of the hardness and Young's modulus is due to the micro-crack closure and the increase of matrix defects in graphite caused by irradiation. The sharp decrease of the hardness and Young's modulus at 180℃ is due to the amorphization of graphite structure caused by irradiation.
- Nuclear-grade graphite,
- Ion irradiation,
- Hardness,
- Young's modulus

FullText(HTML)

References(15)

References

[1]	岳维宏,逄锦鑫. 重水研究堆退役废物再利用研究[J]. 原子能科学技术,2013, 47(8): 1398-1404. doi: 10.7538/yzk.2013.47.08.1398
[2]	KIM E S, KIM Y W. Characterization of 3 MeV H⁺ irradiation induced defects in nuclear grade graphite[J]. Solid State Communications, 2010, 150(35-36): 1633-1636. doi: 10.1016/j.ssc.2010.06.036
[3]	KRISHNA R, JONES A N, MARSDEN B J. Transmission electron microscopy, Raman and X-ray photoelectron spectroscopy studies on neutron irradiated polycrystalline graphite[J]. Radiation Physics and Chemistry, 2015, 107: 121-127. doi: 10.1016/j.radphyschem.2014.10.005
[4]	KRISHNA R, JONES A N, MCDERMOTT L, et al. Neutron irradiation damage of nuclear graphite studied by high-resolution transmission electron microscopy and Raman spectroscopy[J]. Journal of Nuclear Materials, 2015, 467: 557-565. doi: 10.1016/j.jnucmat.2015.10.027
[5]	CAMPBELL A A, KATOH Y, SNEAD M A, et al. Property changes of G347A graphite due to neutron irradiation[J]. Carbon, 2016, 109: 860-873. doi: 10.1016/j.carbon.2016.08.042
[6]	ISHIYAMA S, BURCHELL T D, STRIZAK J P, et al. The effect of high fluence neutron irradiation on the properties of a fine-grained isotropic nuclear graphite[J]. Journal of Nuclear Materials, 1996, 230(1): 1-7. doi: 10.1016/0022-3115(96)00005-0
[7]	KARTHIK C, KANE J, BUTT D P, et al. Neutron irradiation induced microstructural changes in NBG-18 and IG-110 nuclear graphites[J]. Carbon, 2015, 86: 124-131. doi: 10.1016/j.carbon.2015.01.036
[8]	HEGGIE M I, SUAREZ-MARTINEZ I, DAVIDSON C, et al. Buckle, ruck and tuck: a proposed new model for the response of graphite to neutron irradiation[J]. Journal of Nuclear Materials, 2011, 413(3): 150-155. doi: 10.1016/j.jnucmat.2011.04.015
[9]	BROCKLEHURST J E, KELLY B T. Analysis of the dimensional changes and structural changes in polycrystalline graphite under fast neutron irradiation[J]. Carbon, 1993, 31(1): 155-178. doi: 10.1016/0008-6223(93)90169-B
[10]	白新德,王社管,马春来,等. 离子轰击模拟中子辐照在核材料研究中的应用[J]. 原子能科学技术,1996, 30(5): 469-474.
[11]	王志光. 利用高能离子模拟研究反应堆结构材料中的辐照效应[J]. 原子核物理评论,2006, 23(2): 155-160. doi: 10.3969/j.issn.1007-4627.2006.02.016
[12]	黄庆,李健健,黄鹤飞,等. 核石墨的氙离子辐照效应[J]. 核动力工程,2017, 38(S1): 67-70.
[13]	CHANG C K, TSAI S C, KAI J J, et al. A synchrotron X-ray study on the Wigner effect of the irradiated nuclear-grade graphite[J]. Procedia Engineering, 2012, 36: 7-12. doi: 10.1016/j.proeng.2012.03.003
[14]	KARTHIK C, KANE J, BUTT D P, et al. In situ transmission electron microscopy of electron-beam induced damage process in nuclear grade graphite[J]. Journal of Nuclear Materials, 2011, 412(3): 321-326. doi: 10.1016/j.jnucmat.2011.03.024
[15]	KELLY B T. Physics of graphite [M]. London: Applied Science Publishers, 1981: 116-118.