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|Title:||Dependence of the Melting Temperature on Pressure up to 2000 Bar in Uranium Dioxide, Tungsten and Graphite.|
|Authors:||MUSELLA Manuela; RONCHI Claudio; SHEINDLIN M.|
|Citation:||International Journal of Thermophysics vol. 20 no. 4 p. 1177-1188|
|Type:||Articles in Journals|
|Abstract:||The melting point of uranium dioxide, tungsten and graphite was measured as a function of the isostatic pressure up to 2000 bar, in a laser-heated autoclave filled with inert gas. The measured melting curves and their slopes were compared with the predictions obtained from the Clausius-Clapeyron equation and the existing thermochemical data of these substances. Whilst for tungsten and graphite the results show a reasonable agreement with the equilibrium thermodynamic calculation, the melting point of UO2 increases with the equilibrium thermodynamic calculation, the melting point of UO2 increases with pressure with a slope more than three times larger than expected.|
|JRC Institute:||Institute for Transuranium Elements|
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