Phase Diagram of the AgNO3–CsNO3 System

D. Hellali; H. Zamali; A. Sebaoun; M. Jemal

doi:10.1023/a:1010188613487

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Journal of Thermal Analysis and Calorimetry

Volume/Issue:: Volume 57: Issue 2

Phase Diagram of the AgNO₃–CsNO₃ System

Authors: D. Hellali¹, H. Zamali², A. Sebaoun³, and M. Jemal²

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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

DOI:: https://doi.org/10.1023/a:1010188613487

Page Count:: 569–574

Publication Date:: 25 Aug 1999

Online Publication Date:: 03 Nov 2004

Article Category:: Research Article

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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.