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High-temperature Mass Spectrometric Study of the Vaporization of Dysprosium Trifluoride

✍ Scribed by V. L. Stolyarova; R. E. Aune; S. Seetharaman

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 869 KB
Volume: 10
Category: Article
ISSN: 0951-4198
DOI: 10.1002/(sici)1097-0231(19960331)10:5<501::aid-rcm503>3.0.co;2-y

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✦ Synopsis

The high-temperature Knudsen effusion method was used to study the vaporization processes and thermodynamic properties of dysprosium trifluoride in the temperature range 1280-1440 K. Data on the partial vapour pressure of DyF, as a function of temperature and the enthalpy of sublimation of DyF, were obtained. Using the value o€ the enthalpy of formation of solid DyF,, available in the literature, the enthalpy of formation of the gaseous molecule of dysprosium trifluoride and its atomization energy were calculated. At 1382 K, the partial vapour pressure of Dy,F, over dysprosium trifluoride was obtained and the Gibbs energy of the gaseous reaction @y,F6R2DyF,) was evaluated.

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