Thermodynamic Study of the Solid-Liquid Equilibria in the Systems MIPO3-Pr(PO3)3 (MI=Na,Rb, Cs OR Ag) |
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Authors: | Hassen-Chehimi Dalila Ben Kbir-Ariguib Najia Trabelsi-Ayedi Malika |
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Institution: | (1) Laboratoire de Physico-Chimie Minérale, Faculté des Sciences de Bizerte, 7021- Zarzouna-Bizerte, Tunisia;(2) Laboratoire de Physico-Chimie des Interfaces et des Matériaux, Institut National de Recherche Scientifique et Technique, B. P. 95, Hammam-Lif, 2050, Tunisia |
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Abstract: | A previously established equation of a stoichiometric phase liquidus curve was applied to determination of the phase diagrams
of the systems MIPO3-Pr(PO3)3 (with MI=Na, Rb, Cs or Ag).
The temperature, enthalpy and entropy of fusion were calculated for each solid phase with the exception of silver polyphosphate,
the crystallization field of which was very limited.
The enthalpy of fusion of the polyphosphate Pr(PO3)3 was determined from the DTA curve.
The melting enthalpy of Pr(PO3)3 calculated from the different binary systems was approximately equal to the measured value. The calculated temperatures and
compositions were in good agreement with those determined experimentally.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | enthalpy diagrams phase equilibrium phase odymum phosphates |
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