THERMODYNAMIC MODELLING OF HIGH-TEMPERATURE SYNTHESIS OF THE TITAN AND CHROME CARBIDES ON AN ALLOYED STEEL FOR ELECTRON-BEAM MELTING OF MODIFYING COATINGS

摘要

Adiabatic temperatures of interaction and equilibrium phase compositions in the 300-2673 K temperature range are determined by thermodynamic calculations made for a interaction of titan and chrome oxides with carbon on a surface of the alloyed steel 321 at non vacuum electron-beam melting. Synthesized phases are found to be thermodynamically stable refractory compounds - oxides, carbides, nitrides Cr, Ti, Fe and, stable in contact with the solid-state metallic base.