Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 55: Issue 1
Al-Zn-Sn Phase Diagram Calorimetric Study of the Isobaric Invariants
Authors: E. Aragon 1 , D. Vincent 2 , A. Zahra 3 , and A. Sebaoun 1
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  • 1 Université de Toulon et du Var Laboratoire de Physico-Chimie du Matériau et du Milieu Marin, Matériaux à Finalité Spécifique (E. A. 1356) B. P. 132 83957 La Garde cedex France B. P. 132 83957 La Garde cedex France
  • 2 S. A. Metalor av. du Vignoble CH-2009 Neuchâtel Switzerland av. du Vignoble CH-2009 Neuchâtel Switzerland
  • 3 Centre de Thermodynamique et de Microcalorimétrie du CNRS 26 rue du 141 R.I.A 13331 Marseille cedex 3 France 26 rue du 141 R.I.A 13331 Marseille cedex 3 France
DOI:
https://doi.org/10.1023/a:1010125314967
Page Count:
271–282
Publication Date:
01 Jan 1999
Online Publication Date:
16 Aug 2006
Article Category:
Research Article
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Abstract  

A systematic study of Al-Zn-Sn ternary alloys by using a Tian-Calvet calorimeter with slow heating and cooling rate was carried out and supplemented by scanning electron microscopic observations. The results have shown that crystallization coupled with dissolution of tin into the αss′ ternary solid solution on heating is an endothermic process, while melting coupled with tin expulsion on cooling is an exothermic one. It seems that the thermal effects of phase transition are outweighed by much stronger ones due to a large composition change of the αss′ ternary phase.

Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943
Keywords:
Al-Zn-Sn ternary system; calorimetric measurements; crystallization; invariant reaction; mixing enthalpies; phase diagram; Tammann method

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