Oxidation of yttrium hydride moderator for the transformational challenge reactor

Ken Kane; Padraig Stack; Peter Mouche; Bruce Pint; Xunxiang Hu

doi:10.13182/T123-32923

Oxidation of yttrium hydride moderator for the transformational challenge reactor

Ken Kane, Padraig Stack, Peter Mouche, Bruce Pint, Xunxiang Hu

Materials Science and Technology Div

Research output: Contribution to journal › Conference article › peer-review

Abstract

This report summarizes initial oxidation studies of YH_X for use as a moderator in the TER. TGA was used to determine oxidation kinetics in the range of 550° to 650°C for YH* coupons with H/Y ratios of 1.0 to 1.93. Experiments revealed parabolic behavior that transitioned to linear breakaway oxidation for samples having lower hydrogen content, with the parabolic behavior apparently consisting of two regimes. The second regime correlated well with H/Y content and total mass gain during exposure and thus is an appropriate metric to evaluate the impact that the H/Y ratio has on oxidation. Metallographic cross-sectioning characterization is ongoing and will be discussed in future reports. Oxidation exposures in environments more relevant to the TCR will be conducted in the future.

Original language	English
Pages (from-to)	495-496
Number of pages	2
Journal	Transactions of the American Nuclear Society
Volume	123
Issue number	1
DOIs	https://doi.org/10.13182/T123-32923
State	Published - 2020
Event	2020 Transactions of the American Nuclear Society Winter Meeting, ANS 2020 - Virtual, Online, United States Duration: Nov 16 2020 → Nov 20 2020

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© 2020 American Nuclear Society. All rights reserved.

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title = "Oxidation of yttrium hydride moderator for the transformational challenge reactor",

abstract = "This report summarizes initial oxidation studies of YHX for use as a moderator in the TER. TGA was used to determine oxidation kinetics in the range of 550° to 650°C for YH* coupons with H/Y ratios of 1.0 to 1.93. Experiments revealed parabolic behavior that transitioned to linear breakaway oxidation for samples having lower hydrogen content, with the parabolic behavior apparently consisting of two regimes. The second regime correlated well with H/Y content and total mass gain during exposure and thus is an appropriate metric to evaluate the impact that the H/Y ratio has on oxidation. Metallographic cross-sectioning characterization is ongoing and will be discussed in future reports. Oxidation exposures in environments more relevant to the TCR will be conducted in the future.",

author = "Ken Kane and Padraig Stack and Peter Mouche and Bruce Pint and Xunxiang Hu",

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doi = "10.13182/T123-32923",

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T1 - Oxidation of yttrium hydride moderator for the transformational challenge reactor

AU - Kane, Ken

AU - Stack, Padraig

AU - Mouche, Peter

AU - Pint, Bruce

AU - Hu, Xunxiang

PY - 2020

Y1 - 2020

N2 - This report summarizes initial oxidation studies of YHX for use as a moderator in the TER. TGA was used to determine oxidation kinetics in the range of 550° to 650°C for YH* coupons with H/Y ratios of 1.0 to 1.93. Experiments revealed parabolic behavior that transitioned to linear breakaway oxidation for samples having lower hydrogen content, with the parabolic behavior apparently consisting of two regimes. The second regime correlated well with H/Y content and total mass gain during exposure and thus is an appropriate metric to evaluate the impact that the H/Y ratio has on oxidation. Metallographic cross-sectioning characterization is ongoing and will be discussed in future reports. Oxidation exposures in environments more relevant to the TCR will be conducted in the future.

AB - This report summarizes initial oxidation studies of YHX for use as a moderator in the TER. TGA was used to determine oxidation kinetics in the range of 550° to 650°C for YH* coupons with H/Y ratios of 1.0 to 1.93. Experiments revealed parabolic behavior that transitioned to linear breakaway oxidation for samples having lower hydrogen content, with the parabolic behavior apparently consisting of two regimes. The second regime correlated well with H/Y content and total mass gain during exposure and thus is an appropriate metric to evaluate the impact that the H/Y ratio has on oxidation. Metallographic cross-sectioning characterization is ongoing and will be discussed in future reports. Oxidation exposures in environments more relevant to the TCR will be conducted in the future.

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DO - 10.13182/T123-32923

M3 - Conference article

AN - SCOPUS:85118186166

SN - 0003-018X

VL - 123

SP - 495

EP - 496

JO - Transactions of the American Nuclear Society

JF - Transactions of the American Nuclear Society

IS - 1

T2 - 2020 Transactions of the American Nuclear Society Winter Meeting, ANS 2020

Y2 - 16 November 2020 through 20 November 2020

ER -

Oxidation of yttrium hydride moderator for the transformational challenge reactor

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