Abstract

In view of the latest experimental information of Hf-Si binary system, and with the use of the thermodynamic software package Pandat, the Hf-Si phase diagram was re-assessed. A set of self consistent data for the Gibbs energy expressions of all the phases of the system was obtained. The calculated results were compared with the experimental data of the phase equilibrium relations of the system and the formation enthalpies of the intermetallic compounds Hf2Si, Hf5Si3, Hf3Si2, Hf5Si4, HfSi and HfSi2. The theoretical prediction can reproduce the experimental information very well.

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