Satoru Ishihara1, Hiroshi Ohtani2,Takashi Saito1 and Kiyohito Ishida3
1Toyota Central R & D Laboratories, Inc., Aichi-gun 480-1192
A thermodynamic study was carried out on the Sn-In-Sb ternary alloy system. The Gibbs energy of individual phases was approximated by using the regular solution model and the two-sublattice model. The thermodynamic parameters for each phase were evaluated by using the experimental information on the phase boundaries determined by means of thermal analysis, electron probe microanalysis and other available literature data. The use of the evaluated thermodynamic parameters allowed reproducible calculations of whole phase equilibria such as liquidus, solidus, and isothermal and vertical section diagrams. The previously reported invariant reactions related with the liquid phase in the ternary system were reconsidered by the experimental data and the thermodynamic calculation.
(Received January 6, 1999; In Final Form March 19, 1999)
phase diagram, lead-free solder, tin, indium, antimony, thermodynamic modeling, thermal analysis
Please do not copy without permission.