THERMODYNAMIC ANALYSIS OF OBTAINING BINARY Cr-Ta LIGATURE
DOI:
https://doi.org/10.36910/775.24153966.2025.83.1Keywords:
reduction, heat-resistant alloys, intermetallics, carbothermy, molybdenum alloys, powder metallurgy, Laves phasesAbstract
Thermodynamic assessment and study of phase formation patterns in the Cr-Ta system during the simultaneous
carbothermal reduction of Cr2O3 and Ta2O5 oxides with carbon at a temperature of 1000 ℃ were carried out. It is shown that
in the presence of a reducing agent (carbon), thermal energy is directed to the reduction of Cr2O3 and Ta2O5 oxides. This
prevents the reaction between the reduced metals and, as a result, limits the formation of stable Cr2Ta phases.It was established
that the use of the adjacent reduction method not only contributes to the formation of a stable Cr-Ta solid solution, but also
reduces the average particle size of the reduced powder to 2 μm.
