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  • 1 Faculté des Sciences de Monastir, Département de Chimie route de Kairouan 5000 Monastir route de Kairouan 5000 Monastir
  • 2 Campus Universitaire Faculté des Sciences de Tunis, Département de Chimie 1060 Tunis Tunisia 1060 Tunis Tunisia
  • 3 Université de Toulon et du Var, Equipe Matériaux à Finalité Spécifique (UPRES 1356) Faculté des Sciences et Technique, Laboratoire Physicochimie du Matériau et du Milieu Marin BP 132 83957 La Garde France BP 132 83957 La Garde France
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Abstract  

The phase diagram of the binary AgNO3–CsNO3 system was constructed using differential thermal analysis (DTA) technique in the range 300–700 K. The apparatus is described briefly. The results exhibit a congruently melting compound CsNO3·AgNO3 (m.p.=453 K) characterized by two allotropic varieties and , an incongruently melting compound AgNO3·CsNO3 (m.p.=450 K) with three forms , and , two eutectics (16 mol% CsNO3, 442 K and 32.5 mol% CsNO3, 445 K) and a peritectic (38mol% CsNO3, 450 K). The occurrence of the transitions of intermediates was confirmed by X-ray diffraction at variable temperatures. The phase diagram exhibits also two plateaus at 429 K and 435 K corresponding to the phase transitions of CsNO3 and AgNO3, respectively.