Solidus and liquidus temperatures in the UO2-PuO2 system

被引：59

作者：

Kato, M. ^{[1
]}

Morimoto, K. ^{[1
]}

Sugata, H. ^{[2
]}

Konashi, K. ^{[3
]}

Kashimura, M. ^{[1
]}

Abe, T. ^{[1
]}

机构：

[1] Japan Atom Energy Agcy, Nucl Fuel Cycle Engn Labs, Tokai, Ibaraki 3191194, Japan

[2] Inspect Dev Co, Tokai, Ibaraki 3191194, Japan

[3] Tohoku Univ, Oarai, Ibaraki 3111313, Japan

来源：

JOURNAL OF NUCLEAR MATERIALS | 2008年 / 373卷 / 1-3期

关键词：

D O I：

10.1016/j.jnucmat.2007.06.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The melting of plutonium and uranium mixed oxide containing Pu of more than 30% was investigated using a tungsten capsule and a rhenium inner capsule. In the conventional measurements of (Pu, U)O-2.00 in the tungsten capsule, a liquid phase of tungsten and plutonium oxide appeared in the mixed oxide during melting. This liquid phase was found to have an effect on the measurement of melting point. Therefore, the rhenium inner capsule was used to avoid the effect. The solidus and liquidus temperatures in the UO2-PuO2 system were decided from the (Pu, U)O-2.00 data measured using the rhenium capsule, and the effect of the Am content on the solidus temperature was evaluated. The variation of the solidus and liquidus temperatures in the UO2-PuO2-AmO2 ternary system was represented to an accuracy of sigma = +/-9 K and sigma = +/-16 K, respectively, by the ideal solution model. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：237 / 245

页数：9

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