Description:
<jats:title>Abstract</jats:title><jats:p>The simplified chemical‐physical theory (SCPT) for compound‐forming liquid metal solutions is improved by a reduction in the number of modeling parameters using an adaptation of the group contribution approach. A group contribution technique is applied to linearize the Gibbs energy (and enthalpy) of formation of intermetallic compounds. As a result, the activities or Gibbs energies of many binary liquid alloy systems are represented successfully with only a single parameter for the chemical interactions and another for the physical interactions. Similarly, the enthalpies of mixing are modeled well using only the temperature derivatives of these two parameters.</jats:p>