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用于熔盐核反应堆的离子注入纳米孔热解石墨涂层的直接表征

Direct characterization of ion implanted nanopore pyrolytic graphite coatings for molten salt nuclear reactors.

作者信息

Zhang Heyao, Lei Qiantao, Song Jinliang, Liu Min, Zhang Can, Gao Yantao, Zhang Wenting, Xia Huihao, Liu Xiangdong

机构信息

School of Physics, State Key Laboratory of Crystal Materials, Shandong University Jinan 250100 China.

Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences Shanghai 201800 China.

出版信息

RSC Adv. 2018 Oct 2;8(59):33927-33938. doi: 10.1039/c8ra06953k. eCollection 2018 Sep 28.

DOI:10.1039/c8ra06953k
PMID:35548833
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9086727/
Abstract

Nanopore pyrolytic graphite coatings (PyC, average pore size ∼64 nm) were prepared on graphite to inhibit liquid fluoride salt and Xe penetration. The samples were irradiated with 7 MeV Xe to a total peak dose of 0.1, 0.5, 2.5 and 5.0 displacements per atom at room temperature to study the irradiation resistance of the PyC. The effect of irradiation on the properties of the graphite was evaluated. With the increase of irradiation dose, the surface morphology of the coatings tends to be smoother. At the total peak dose of 2.5 dpa, peeling and spalling on the surface of the samples have been identified, indicating the surface microstructure of the graphite has been damaged by Xe bombardment. Raman results indicated the increase in the degree of disorder and decrease of in-plane crystallite size with the irradiation dose, and the new PyC was more sensitive to irradiation than IG-110 graphite. The nanohardness at peak dose increased with the irradiation dose, but decreased at 2.5 dpa. The results of a hardness test also show PyC has a higher irradiation sensitivity.

摘要

在石墨上制备了纳米孔热解石墨涂层（PyC，平均孔径约64纳米），以抑制液态氟化物盐和氙的渗透。在室温下，用7兆电子伏特的氙对样品进行辐照，使每个原子的总峰值剂量达到0.1、0.5、2.5和5.0位移，以研究PyC的抗辐照性能。评估了辐照对石墨性能的影响。随着辐照剂量的增加，涂层的表面形态趋于更光滑。在总峰值剂量为2.5 dpa时，已确定样品表面出现剥落和起皮现象，这表明石墨的表面微观结构已受到氙轰击的破坏。拉曼结果表明，随着辐照剂量的增加，无序度增加，面内微晶尺寸减小，并且新的PyC比IG-110石墨对辐照更敏感。峰值剂量下的纳米硬度随辐照剂量增加，但在2.5 dpa时降低。硬度测试结果也表明PyC具有较高的辐照敏感性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/d5896c332c52/c8ra06953k-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/6cf10eb5d8ea/c8ra06953k-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/1007fc095b39/c8ra06953k-f2.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/36f8812b0dd8/c8ra06953k-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/e10efff11362/c8ra06953k-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/a442e2f95993/c8ra06953k-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/60bcc1d6efa4/c8ra06953k-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/cd5cdff6ae66/c8ra06953k-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/d5896c332c52/c8ra06953k-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/6cf10eb5d8ea/c8ra06953k-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/1007fc095b39/c8ra06953k-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/99c325ddb5c3/c8ra06953k-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/36f8812b0dd8/c8ra06953k-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/e10efff11362/c8ra06953k-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/a442e2f95993/c8ra06953k-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/60bcc1d6efa4/c8ra06953k-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/cd5cdff6ae66/c8ra06953k-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1b1b/9086727/d5896c332c52/c8ra06953k-f9.jpg

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本文引用的文献

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