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Studies on thermophysical properties of ThW2O8 and UWO6

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Abstract

Thermal stability and expansion behavior of ThW2O8 and UWO6 were studied using thermogravimetry and high-temperature X-ray diffraction techniques. ThW2O8 and UWO6 showed positive thermal expansion in vacuum from ambient to 1273 and 1073 K, respectively. Heat capacity for ThW2O8(s) and UWO6(s) was measured in argon atmosphere using heat flux-type differential scanning calorimeter, and thermodynamic functions of these compounds have been computed from the measured heat capacity data. The structural study of UWO6 was also carried out from powder X-ray diffraction data using Rietveld profile method.

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Authors and Affiliations

  1. Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India

    Meera Keskar, K. Krishnan, R. Phatak, S. K. Sali & S. Kannan

  2. Product Development Division, Bhabha Atomic Research Centre, Mumbai, 400085, India

    Smruti Dash

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  1. Meera Keskar
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  2. K. Krishnan
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  3. R. Phatak
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  5. S. K. Sali
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Correspondence to S. K. Sali.

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Keskar, M., Krishnan, K., Phatak, R. et al. Studies on thermophysical properties of ThW2O8 and UWO6 . J Therm Anal Calorim 126, 659–670 (2016). https://doi.org/10.1007/s10973-016-5575-7

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