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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >Molar heat capacity of uranium-rich U-Zr-Nb and U-Zr-Mo alloys
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Molar heat capacity of uranium-rich U-Zr-Nb and U-Zr-Mo alloys

机译：富含铀的U-ZR-NB和U-ZR-MO合金的摩尔热容量

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Uranium-rich U-Zr-Nb and U-Zr-Mo alloys are considered to be good alternative fuel for fast reactors. From that prospective, number of selected uranium rich binary and ternary U-6X (X= Zr + Nb/Mo) alloy samples (i.e., U-6Zr, U-6Nb, U-2Zr-4Nb, U-4Zr-2Mo, U-2Zr-4Mo) with total alloying content of 6 wt% were prepared and characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) equipped with energy dispersive spectroscope (EDS) and differential thermal analyzer (DTA). Molar heat capacity is considered as one of the most important thermophysical properties of nuclear fuel. The molar heat capacity measurements of U-6Zr, U-2Zr-4Nb, U-6Nb, U-4Zr-2Mo and U-2Zr-4Mo alloys were carried out using differential scanning calorimeter (DSC) in the temperature range of 323-823 K. The U-6Zr alloy is considered here as the reference composition and the effect of Nb or Mo addition on the molar heat capacity data of U-6X alloys has been highlighted. The thermodynamic functions such as molar enthalpy increment H-m(0) (T) - H-m(0)(298.15K) and molar entropy increment S-m(0)(T) - S-m(0)(298.15K) of the alloy samples have been evaluated using measured molar heat capacity C-p,m(0)(T) data. (C) 2020 Elsevier B.V. All rights reserved.
机译：富含铀的U-ZR-NB和U-ZR-MO合金被认为是快速反应器的良好替代燃料。从该前瞻性，富含铀的二元和三元U-6X（X = Zr + Nb / Mo）合金样品（即U-6ZR，U-6NB，U-2ZR-4NB，U-4ZR-2MO，U X射线衍射（XRD），X射线衍射（XRD），扫描电子显微镜（SEM）配备了总合金化含量为6wt％的含量为6wt％，扫描电子显微镜（EDS）和差分热分析仪（DTA）。摩尔热容量被认为是核燃料最重要的热物理性质之一。使用差示扫描量热计（DSC）在323-823的温度范围内进行U-6ZR，U-2ZR-4NB，U-6NB，U-4ZR-2MO和U-2ZR-4MO合金的摩尔热容量测量值K.这里认为U-6ZR合金作为参考组成和Nb或Mo对U-6x合金的摩尔热容量数据的影响已经突出显示。诸如摩尔焓增量HM（0）（T） - HM（0）（298.15K）和摩尔熵增量SM（0）（T） - SM（0）（298.15K）的热力学功能已经存在使用测量的摩尔热容量CP，M（0）（t）数据进行评估。 （c）2020 Elsevier B.v.保留所有权利。

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