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Thermodynamic reassessment of the Sn–Y system

A. IDDAOUDI1,* , N. SELHAOUI1, M. AIT AMAR1, S. KARDELLASS1, L. BOUIRDEN1

Affiliation

  1. Laboratory of Thermodynamics and Energy (L.T.E), Faculty of science, B. P. 8106, Ibn Zohr University, Agadir, Morocco

Abstract

The phase diagram of the Sn-Y and thermodynamic system has been critically assessed by means of CALPHAD technique. The solution phases (liquid, hcp and bcc) are modeled with the Redlich-Kister equation, and the intermetallic compounds (Sn4Y5, Sn10Y11, Sn2Y, Sn5Y2 and Sn3Y) are treated as stoichiometric compounds. The Sn3Y5 sub-stoichiometric intermetallic compound, which have a homogeneity range, were treated with the formula (Sn)0.375(Sn,Y%)0.625 by a twosublattice model with Sn on the first sublattice and Sn and Yon the second one. The calculated phase diagram and the thermodynamic properties of the system are in satisfactory agreement with the majority of the experimental data..

Keywords

Sn-Y system, Phase diagram, Thermodynamic assessment, Calphad method.

Submitted at: Sept. 28, 2013
Accepted at: Nov. 7, 2013

Citation

A. IDDAOUDI, N. SELHAOUI, M. AIT AMAR, S. KARDELLASS, L. BOUIRDEN, Thermodynamic reassessment of the Sn–Y system, Journal of Optoelectronics and Advanced Materials Vol. 15, Iss. 11-12, pp. 1280-1285 (2013)