Thermal expansion measurement of (U,Pu)O2-x in oxygen partial pressure-controlled atmosphere

Masato Kato; Yoshihisa Ikusawa; Takeo Sunaoshi; Andrew T. Nelson; Kenneth J. McClellan

doi:10.1016/j.jnucmat.2015.11.048

Thermal expansion measurement of (U,Pu)O_2-x in oxygen partial pressure-controlled atmosphere

Masato Kato, Yoshihisa Ikusawa, Takeo Sunaoshi, Andrew T. Nelson, Kenneth J. McClellan

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

19 Scopus citations

Abstract

Thermal expansion of U_0.7Pu_0.3O_2-x (x = 0, 0.01, 0.02, 0.03) and U_0.52Pu_0.48O_2.00 was investigated by a unique dilatometry which measured in an oxygen partial pressure-controlled atmosphere. The oxygen partial pressure was controlled to hold a constant oxygen-to-metal ratio in the (U,Pu)O_2-x during the measurement. Thermal expansion slightly increased with the decrease in oxygen-to-metal ratio. We proposed a relationship to describe thermal expansion as a function of temperature, O/M and Pu content.

Original language	English
Pages (from-to)	223-227
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	469
DOIs	https://doi.org/10.1016/j.jnucmat.2015.11.048
State	Published - Feb 1 2016
Externally published	Yes

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title = "Thermal expansion measurement of (U,Pu)O2-x in oxygen partial pressure-controlled atmosphere",

abstract = "Thermal expansion of U0.7Pu0.3O2-x (x = 0, 0.01, 0.02, 0.03) and U0.52Pu0.48O2.00 was investigated by a unique dilatometry which measured in an oxygen partial pressure-controlled atmosphere. The oxygen partial pressure was controlled to hold a constant oxygen-to-metal ratio in the (U,Pu)O2-x during the measurement. Thermal expansion slightly increased with the decrease in oxygen-to-metal ratio. We proposed a relationship to describe thermal expansion as a function of temperature, O/M and Pu content.",

author = "Masato Kato and Yoshihisa Ikusawa and Takeo Sunaoshi and Nelson, {Andrew T.} and McClellan, {Kenneth J.}",

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T1 - Thermal expansion measurement of (U,Pu)O2-x in oxygen partial pressure-controlled atmosphere

AU - Kato, Masato

AU - Ikusawa, Yoshihisa

AU - Sunaoshi, Takeo

AU - Nelson, Andrew T.

AU - McClellan, Kenneth J.

PY - 2016/2/1

Y1 - 2016/2/1

N2 - Thermal expansion of U0.7Pu0.3O2-x (x = 0, 0.01, 0.02, 0.03) and U0.52Pu0.48O2.00 was investigated by a unique dilatometry which measured in an oxygen partial pressure-controlled atmosphere. The oxygen partial pressure was controlled to hold a constant oxygen-to-metal ratio in the (U,Pu)O2-x during the measurement. Thermal expansion slightly increased with the decrease in oxygen-to-metal ratio. We proposed a relationship to describe thermal expansion as a function of temperature, O/M and Pu content.

AB - Thermal expansion of U0.7Pu0.3O2-x (x = 0, 0.01, 0.02, 0.03) and U0.52Pu0.48O2.00 was investigated by a unique dilatometry which measured in an oxygen partial pressure-controlled atmosphere. The oxygen partial pressure was controlled to hold a constant oxygen-to-metal ratio in the (U,Pu)O2-x during the measurement. Thermal expansion slightly increased with the decrease in oxygen-to-metal ratio. We proposed a relationship to describe thermal expansion as a function of temperature, O/M and Pu content.

UR - http://www.scopus.com/inward/record.url?scp=84964677831&partnerID=8YFLogxK

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DO - 10.1016/j.jnucmat.2015.11.048

M3 - Article

AN - SCOPUS:84964677831

SN - 0022-3115

VL - 469

SP - 223

EP - 227

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

Thermal expansion measurement of (U,Pu)O_2-x in oxygen partial pressure-controlled atmosphere

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