Effect of carbon ion irradiation on Ag diffusion in SiC

Bin Leng; Hyunseok Ko; Tyler J. Gerczak; Jie Deng; Andrew J. Giordani; Jerry L. Hunter; Dane Morgan; Izabela Szlufarska; Kumar Sridharan

doi:10.1016/j.jnucmat.2015.11.017

Effect of carbon ion irradiation on Ag diffusion in SiC

Bin Leng, Hyunseok Ko, Tyler J. Gerczak, Jie Deng, Andrew J. Giordani, Jerry L. Hunter, Dane Morgan, Izabela Szlufarska, Kumar Sridharan

Particle Fuel Forms

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

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°C, 1535°C, and 1569°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.

Original language	English
Pages (from-to)	220-232
Number of pages	13
Journal	Journal of Nuclear Materials
Volume	471
DOIs	https://doi.org/10.1016/j.jnucmat.2015.11.017
State	Published - Apr 1 2016

Funding

This is work supported by the US DOE, Office of Nuclear Energy Nuclear Energy University Program (NEUP) , award no. 11-2988 and by the US DOE, Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07-051D14517 , as part of an ATR-NSUF experiment. The authors would like to thank Dr. Beata Tyburska-Pueschel for helping with the carbon irradiation and also thank Dr. Ovidiu Toader for conducting the Ag implantation at the MIBL.

Funders	Funder number
U.S. Department of Energy	DE-AC07-051D14517
Office of Nuclear Energy
Nuclear Energy University Program	11-2988

Keywords

Diffusion
Radiation
Silicon carbide
Silver
TRISO

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title = "Effect of carbon ion irradiation on Ag diffusion in SiC",

abstract = "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°C, 1535°C, and 1569°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.",

keywords = "Diffusion, Radiation, Silicon carbide, Silver, TRISO",

author = "Bin Leng and Hyunseok Ko and Gerczak, {Tyler J.} and Jie Deng and Giordani, {Andrew J.} and Hunter, {Jerry L.} and Dane Morgan and Izabela Szlufarska and Kumar Sridharan",

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doi = "10.1016/j.jnucmat.2015.11.017",

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AU - Leng, Bin

AU - Ko, Hyunseok

AU - Gerczak, Tyler J.

AU - Deng, Jie

AU - Giordani, Andrew J.

AU - Hunter, Jerry L.

AU - Morgan, Dane

AU - Szlufarska, Izabela

AU - Sridharan, Kumar

PY - 2016/4/1

Y1 - 2016/4/1

N2 - 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°C, 1535°C, and 1569°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.

AB - 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°C, 1535°C, and 1569°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.

KW - Diffusion

KW - Radiation

KW - Silicon carbide

KW - Silver

KW - TRISO

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DO - 10.1016/j.jnucmat.2015.11.017

M3 - Article

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VL - 471

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JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

Effect of carbon ion irradiation on Ag diffusion in SiC

Abstract

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Keywords

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