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Based on the available experimental information, the Au-Bi binary system has been thermodynamically assessed using the CALPHAD method. The solution phases, including liquid, fcc_A1, and rhombohedral_A7, were modeled as substitutional solutions, while the intermediate compound Au 2 Bi was described as a stoichiometric compound. Combined with the available thermodynamic parameters of the Au-Sb and Bi-Sb binary systems, a thermodynamic description of the Au-Bi-Sb ternary system has been developed to reproduce the reported phase equilibria. The liquidus projection and several vertical and isothermal sections of this ternary system have been calculated, which are in reasonable agreement with the reported experimental data.

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