Onset conditions for flash sintering of UO2

Alicia M. Raftery; João Gustavo Pereira da Silva; Darrin D. Byler; David A. Andersson; Blas P. Uberuaga; Christopher R. Stanek; Kenneth J. McClellan

doi:10.1016/j.jnucmat.2017.06.022

Onset conditions for flash sintering of UO₂

Alicia M. Raftery, João Gustavo Pereira da Silva, Darrin D. Byler, David A. Andersson, Blas P. Uberuaga, Christopher R. Stanek, Kenneth J. McClellan

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

34 Scopus citations

Abstract

In this work, flash sintering was demonstrated on stoichiometric and non-stoichiometric uranium dioxide pellets at temperatures ranging from room temperature (26°C) up to 600°C. The onset conditions for flash sintering were determined for three stoichiometries (UO_2.00, UO_2.08, and UO_2.16) and analyzed against an established thermal runaway model. The presence of excess oxygen was found to enhance the flash sintering onset behavior of uranium dioxide, lowering the field required to flash and shortening the time required for a flash to occur. The results from this study highlight the effect of stoichiometry on the flash sintering behavior of uranium dioxide and will serve as the foundation for future studies on this material.

Original language	English
Pages (from-to)	264-270
Number of pages	7
Journal	Journal of Nuclear Materials
Volume	493
DOIs	https://doi.org/10.1016/j.jnucmat.2017.06.022
State	Published - Sep 2017
Externally published	Yes

Keywords

Field assisted sintering
Flash sintering
Nuclear Fuel
Uranium dioxide

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10.1016/j.jnucmat.2017.06.022

Cite this

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title = "Onset conditions for flash sintering of UO2",

abstract = "In this work, flash sintering was demonstrated on stoichiometric and non-stoichiometric uranium dioxide pellets at temperatures ranging from room temperature (26°C) up to 600°C. The onset conditions for flash sintering were determined for three stoichiometries (UO2.00, UO2.08, and UO2.16) and analyzed against an established thermal runaway model. The presence of excess oxygen was found to enhance the flash sintering onset behavior of uranium dioxide, lowering the field required to flash and shortening the time required for a flash to occur. The results from this study highlight the effect of stoichiometry on the flash sintering behavior of uranium dioxide and will serve as the foundation for future studies on this material.",

keywords = "Field assisted sintering, Flash sintering, Nuclear Fuel, Uranium dioxide",

author = "Raftery, {Alicia M.} and {Pereira da Silva}, {Jo{\~a}o Gustavo} and Byler, {Darrin D.} and Andersson, {David A.} and Uberuaga, {Blas P.} and Stanek, {Christopher R.} and McClellan, {Kenneth J.}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = sep,

doi = "10.1016/j.jnucmat.2017.06.022",

language = "English",

volume = "493",

pages = "264--270",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

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TY - JOUR

T1 - Onset conditions for flash sintering of UO2

AU - Raftery, Alicia M.

AU - Pereira da Silva, João Gustavo

AU - Byler, Darrin D.

AU - Andersson, David A.

AU - Uberuaga, Blas P.

AU - Stanek, Christopher R.

AU - McClellan, Kenneth J.

PY - 2017/9

Y1 - 2017/9

N2 - In this work, flash sintering was demonstrated on stoichiometric and non-stoichiometric uranium dioxide pellets at temperatures ranging from room temperature (26°C) up to 600°C. The onset conditions for flash sintering were determined for three stoichiometries (UO2.00, UO2.08, and UO2.16) and analyzed against an established thermal runaway model. The presence of excess oxygen was found to enhance the flash sintering onset behavior of uranium dioxide, lowering the field required to flash and shortening the time required for a flash to occur. The results from this study highlight the effect of stoichiometry on the flash sintering behavior of uranium dioxide and will serve as the foundation for future studies on this material.

AB - In this work, flash sintering was demonstrated on stoichiometric and non-stoichiometric uranium dioxide pellets at temperatures ranging from room temperature (26°C) up to 600°C. The onset conditions for flash sintering were determined for three stoichiometries (UO2.00, UO2.08, and UO2.16) and analyzed against an established thermal runaway model. The presence of excess oxygen was found to enhance the flash sintering onset behavior of uranium dioxide, lowering the field required to flash and shortening the time required for a flash to occur. The results from this study highlight the effect of stoichiometry on the flash sintering behavior of uranium dioxide and will serve as the foundation for future studies on this material.

KW - Field assisted sintering

KW - Flash sintering

KW - Nuclear Fuel

KW - Uranium dioxide

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U2 - 10.1016/j.jnucmat.2017.06.022

DO - 10.1016/j.jnucmat.2017.06.022

M3 - Article

AN - SCOPUS:85021420307

SN - 0022-3115

VL - 493

SP - 264

EP - 270

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

Onset conditions for flash sintering of UO₂

Abstract

Keywords

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