Effect of carbon ion irradiation on Ag diffusion in SiC

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	Effect of carbon ion irradiation on Ag diffusion in SiC
	Leng, B; Ko, H; Gerczak, TJ; Deng, J; Giordani, AJ; Hunter, JL; Morgan, D; Szlufarska, I; Sridharan, K
刊名	JOURNAL OF NUCLEAR MATERIALS
	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
ISSN号	0022-3115
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.
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
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/25694]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Leng, B,Ko, H,Gerczak, TJ,et al. Effect of carbon ion irradiation on Ag diffusion in SiC[J]. JOURNAL OF NUCLEAR MATERIALS,2016,471(-):220—232.
APA	Leng, B.,Ko, H.,Gerczak, TJ.,Deng, J.,Giordani, AJ.,...&Sridharan, K.(2016).Effect of carbon ion irradiation on Ag diffusion in SiC.JOURNAL OF NUCLEAR MATERIALS,471(-),220—232.
MLA	Leng, B,et al."Effect of carbon ion irradiation on Ag diffusion in SiC".JOURNAL OF NUCLEAR MATERIALS 471.-(2016):220—232.