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题名:
Effect of carbon ion irradiation on Ag diffusion in SiC
作者: Leng, B; Ko, H; Gerczak, TJ; Deng, J; Giordani, AJ; Hunter, JL; Morgan, D; Szlufarska, I; Sridharan, K
刊名: JOURNAL OF NUCLEAR MATERIALS
出版日期: 2016
卷号: 471, 期号:-, 页码:220—232
关键词: RADIATION-ENHANCED DIFFUSION ; CUBIC SILICON-CARBIDE ; AMORPHOUS METALLIC ALLOYS ; TOTAL-ENERGY CALCULATIONS ; GRAIN-BOUNDARY DIFFUSION ; TRISO COATED PARTICLES ; AUGMENTED-WAVE METHOD ; FUEL-PARTICLES ; MOLECULAR-DYNAMICS ; ULTRASOFT PSEUDOPOTENTIALS
DOI: 10.1016/j.jnucmat.2015.11.017
通讯作者: Sridharan, K (reprint author), Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA. ; Szlufarska, I (reprint author), Univ Wisconsin, Mat Sci & Engn Dept, Madison, WI 53706 USA.
文章类型: 期刊文献
英文摘要: Transport of Ag fission product through the silicon-carbide (SiC) diffusion barrier layer in TRISO fuel particles is of considerable interest given the application of this fuel type in high temperature gas-cooled reactor (HTGR) and other future reactor concepts. The reactor experiments indicate that radiation may play an important role in release of Ag; however so far the isolated effect of radiation on Ag diffusion has not been investigated in controlled laboratory experiments. In this study, we investigate the diffusion couples of Ag and polycrystalline 3C-SiC, as well as Ag and single crystalline 4H-SiC samples before and after irradiation with C2+ ions. The diffusion couple samples were exposed to temperatures of 1500 degrees C, 1535 degrees C, and 1569 degrees C, and the ensuing diffusion profiles were analyzed by secondary ion mass spectrometry (SIMS). Diffusion coefficients calculated from these measurements indicate that Ag diffusion was greatly enhanced by carbon irradiation due to a combined effect of radiation damage on diffusion and the presence of grain boundaries in polycrystalline SiC samples. (C) 2015 Elsevier B.V. All rights reserved.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000371795400030
ISSN号: 0022-3115
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/25694
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Leng, B,Ko, H,Gerczak, TJ,et al. Effect of carbon ion irradiation on Ag diffusion in SiC[J]. JOURNAL OF NUCLEAR MATERIALS,2016-01-01,471(-):220—232.
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