발간논문

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Vol.32, No.11, 1372 ~ 1380, 1994
Title
A Study on the Calculation of Mixing Enthalpies of Liquid alloys Using the Regular Associate solution Model
김성진Sung Dong Kim, 이정중Jung Joong Lee
Abstract
The concentration and temperature dependence of the mixing enthalpies of liquid Cu-Sb, Sb-Sn, Cu-Sn and Cu-Sb-Sn alloys could be described by the regular associate solution model. A new numerical method which uses the least square method and the Newton-Raphson method is proposed for the calculation of the model parameters. The calculation shows that the free energy of mixing of liquid Cu-Sb alloy can be much better described with CuSb and Cu₃Sb associates than with Cu₂Sb or Cu₃Sb associate alone. The mixing enthalpies of Cu-Sn-Sb alloy calculated with the assumption of four kinds of associates are in good agreement with the experimental data. By the calculation the model parameters are fixed using only the data of the three binary bordering systems.
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