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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.43  No.8 (2002)  >  pp.1868-1872

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Thermodynamic Properties of Liquid Al-Sn-Zn Alloys: A Possible New Lead-Free Solder Material

Sabine Knott1) and Adolf Mikula1)
1) Institut für Anorganische Chemie, Universität Wien, Währingerstr.

Because of its potential to be used as a lead free solder material the thermodynamic properties of the liquid Al–Sn–Zn system were investigated. Using an appropriate galvanic cell, the partial free energies of Al were determined as a function of concentration and temperature. Thermodynamic properties were obtained for 30 alloys. Their composition was situated on three cross-sections with constant ratios of Sn:Zn=2:1, 1:1 and 1:2. The integral Gibbs energy and the integral enthalpy for the ternary system at 973 K were calculated by Gibbs-Duhem integration.

aluminum-tin-zinc ternary system, thermodynamic properties, lead-free solder materials, electromotive force measurements

Received: February 18, 2002
Accepted: April 15, 2002 , Published online: September 06, 2005
Copyright (c) 2005 The Japan Institute of Metals



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