Abstract

The Nb–Si–Ti system is assessed thermodynamically based on the experimental isothermal sections at 1000, 1150, 1200, 1340 and 1500 °C, and the liquidus projections from both literatures and the present measurements. The parameters for the thermodynamic description of the ternary system are optimized following the reported descriptions of the Nb–Si, Ti–Si and Ti–Nb binary systems, among which some of the parameters of the Nb–Si system are modified according to its related binary experimental data. Comparison between the calculated results and the experimental investigations shows that the present modeling can finely describe the experimental information of the Nb–Si–Ti ternary phase diagram.

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