A science-based mixed oxide property model for developing advanced oxide nuclear fuels

被引：2

作者：

Kato, Masato ^{[1
,2
,3
,4
]}

Oki, Takumi ^{[2
]}

Watanabe, Masashi ^{[1
,2
,3
,4
]}

Hirooka, Shun ^{[2
,3
]}

Vauchy, Romain ^{[2
]}

Ozawa, Takayuki ^{[2
,3
]}

Uwaba, Tomoyuki ^{[4
]}

Ikusawa, Yoshihisa ^{[2
]}

Nakamura, Hiroki ^{[5
]}

Machida, Masahiko ^{[5
]}

机构：

[1] Japan Atom Energy Agcy, Nucl Plant Innovat Promot Off, Oarai, Ibaraki 3111393, Japan

[2] Japan Atom Energy Agcy, Fuel Engn Dept, Plutonium Fuel Dev Ctr, Tokai, Japan

[3] Japan Atom Energy Agcy, Fuel Cycle Design Off, Oarai, Japan

[4] Japan Atom Energy Agcy, Fuels & Mat Dept, Oarai Res & Dev Ctr, Oarai, Japan

[5] Japan Atom Energy Agcy, Ctr Computat Sci & Esyst, Kashiwa, Japan

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2024年 / 107卷 / 05期

关键词：

Bredig transition; electronic conduction; MOX fuel; phonon conduction; physical property; plutonium; ELECTRICAL-CONDUCTIVITY; THERMAL-CONDUCTIVITY; THERMOPHYSICAL PROPERTIES; HIGH-TEMPERATURES; (U; PU; PLUTONIA; URANIA; UO2;

D O I：

10.1111/jace.19609

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Herein, a science-based uranium and plutonium mixed oxide (MOX) property model is derived for determining the properties of MOX fuel and analyzing their performance as functions of Pu content, minor-actinide content, oxygen-to-metal ratio, and temperature. The property model is constructed by evaluating the effect of phonons and electronic defects on the heat capacity and thermal conductivity of MOX fuels. The effect of phonons was evaluated based on experimental datasets related to lattice parameters, thermal expansion, and sound speeds. Moreover, the effect of electronic defects was determined by analyzing oxygen-potential data based on defect chemistry. Furthermore, the model evaluated the effect of the Bredig transition on the thermal properties of MOX fuel by analyzing the irradiation test results. The derived property model is applied to the performance code to analyze fast reactor fuel pins.

引用

页码：2998 / 3011

页数：14

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