Study of the Fe-Si-Al-Ba system using the thermodynamic-diagrammatic analyses method

The article presents the results of a study thermodynamic-diagram analysis Fe-Si-Al-Ba multicomponent system, where, on basis thermodynamic data, boundary ternary systems basic four-component system are constructed. As result, it was determined that consists 12 elementary tetrahedra. For each tetrahedra, analytical equations determined, with help which is possible to establish location in factor space general compositions various metal melts calculation their normative phase compositions. correctness breakdown into tetrahedra can be seen due volumes same where sum these equal one (1.00000). quasi-volumes Fe-Si-Al-Ba, simulating resulting products during smelting an alloy ferrosilicoaluminum barium process reduction, have been established. turned out does not include and quaternary compounds, exception interstitial solid solutions containing Fe-Si Fe-Al phases doped barium, as well silicon-barium-aluminum eutectic. In this case, region composition content 8-10% will most optimal. Further, increase concentration above 10%, leads loss atmospheric oxygen, also violation melting process.