Calorimetric measurements on (U,Th)O2 solid solutions

被引：21

作者：

Kandan, R. ^{[1
]}

Babu, R. ^{[1
]}

Manikandan, P. ^{[1
]}

Krishnan, R. Venkata ^{[1
]}

Nagarajan, K. ^{[1
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Div Fuel Chem, Chem Grp, Dept Atom Energy, Kalpakkam 603102, Tamil Nadu, India

来源：

JOURNAL OF NUCLEAR MATERIALS | 2009年 / 384卷 / 03期

关键词：

URANIA; THO2;

D O I：

10.1016/j.jnucmat.2008.11.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Enthalpy increments of urania - thoria solid solutions, (U0.10Th0.90)O-2, (U0.50Th0.50)O-2 and (U0.90Th0.10)O-2 were measured by drop calorimetry in the temperature range 479 - 1805 K. Heat capacity, entropy and Gibbs energy function were computed. The heat capacity measurements were carried out also with differential scanning calorimetry in the temperature range 298 - 800 K. The heat capacity values of (U0.10Th0.90)O-2, (U0.50Th0.50)O-2 and (U0.90Th0.10)O-2 at 298K are 59.62, 61.02, 63.56 J K-1 mol(-1), respectively. The results were compared with the data available in the literature. From the study, the heat capacity of (U,Th)O-2 solid solutions was shown to obey the Neumann - Kopp's rule. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：231 / 235

页数：5

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